But thou hast followed [1] In order to urge Timothy, he employs this argument also, that he is not an ignorant and untaught soldier, because Paul carried him through a long course of training. Nor does he speak of doctrine only; for those things which he likewise enumerates add much weight, and he gives to us, in this sentence, a very lively picture of a good teacher, as one who does not, by words only, train and instruct his disciples, but, so to speak, opens his very breast to them, that they may know, that whatever he teaches, he teaches sincerely. This is what is implied in the word purpose He likewise adds other proofs of sincere and unfeigned affection, such as faith, mildness, love, patience Such were the early instructions which had been imparted to Timothy in the school of Paul. Yet he does not merely bring to remembrance what he had learned from him, but bears testimony to his former life, that in this manner he may urge him to perseverance; for he praises him as an imitator of his own virtues; as if he had said, "Thou hast been long accustomed to follow my instructions; I ask nothing more than that thou shouldst go on as thou hast begun." It is his wish, however; that the example of his "faith, love, and patience" should be constantly before the eyes of Timothy; and for that reason he dwells chiefly on his persecutions, which were best known to him.

Footnotes

1 - "Having spoken of the troubles which were to befall the Church, and having exhorted Timothy to be firm, so as not to shrink from them, the Apostle adds, that now, for a long time, he must have been prepared for all this, because he had been taught in a good school. Thou hast known intimately,' like one who had followed him step by step; for such is the import of the word which Paul uses: Thou hast known well the course which I have pursued.'" -- Fr. Ser.

But thou hast fully known my doctrine - Margin, "been a diligent follower of." The margin is more in accordance with the usual meaning of the Greek word, which means, properly, to accompany side by side; to follow closely; to trace out; to examine Luke 1:3, and to conform to. The meaning here, however, seems to be, that Timothy had an opportunity to follow out; i. e., to examine closely the manner of life of the apostle Paul. He had been so long his companion, that he had had the fullest opportunity of knowing how he had lived and taught, and how he had borne persecutions. The object of this reference to his own life and sufferings is evidently to encourage Timothy to bear persecutions and trials in the same manner; compare 2-Timothy 3:14. He saw, in the events which began already to develope themselves, that trials must be expected; he knew that all who would live holy lives must suffer persecution; and hence, he sought to prepare the mind of Timothy for the proper endurance of trials, by a reference to his own case. The word "doctrine," here, refers to his "teaching," or manner of giving instruction. It does not refer, as the word now does, to the opinions which he held; see the notes at 1-Timothy 4:16. In regard to the opportunities which Timothy had for knowing the manner of Paul's life, see the introduction to the Epistle, and Paley, Hor. Paul., "in loc." Timothy had been the companion of Paul during a considerable portion of the time after his conversion. The "persecutions" referred to here 2-Timothy 3:11 are those which occurred in the vicinity of Timothy's native place, and which he would have had a particular opportunity of being acquainted with. This circumstance, and the fact that Paul did not refer to other persecutions in more remote places, is one of the "undesigned coincidences," of which Paley has made so much in his incomparable little work - Horae Paulinae.
Manner of life - Literally, "leading, guidance;" then, the method in which one is led - his manner of life; compare the notes at 1-Thessalonians 2:1.
Purpose - Plans, or designs.
Faith - Perhaps fidelity, or faithfulness.
Long-suffering - With the evil passions of others, and their efforts to injure him. See the word explained in the notes at 1-Corinthians 13:4.
Charity - see the notes at 1 Cor. 13.
Patience - "A calm temper, which suffers evils without murmuring or discontent." Webster.

Thou hast fully known my doctrine - And having long had the opportunity of knowing me, the doctrine I preached, my conduct founded on these doctrines, the object I have in view by my preaching, my fidelity to God and to my trust, my long-suffering with those who walked disorderly, and opposed themselves to the truth, and did what they could to lessen my authority and render it suspected, my love to them and to the world in general, and my patience in all my adversities; thou art capable of judging between me and the false teachers, and canst easily discern the difference between their doctrines, conduct, motives, temper, spirit, etc., and mine.

(4) But thou hast (b) fully known my doctrine, manner of life, purpose, faith, longsuffering, charity, patience,
(4) So that we are not deceived by such hypocrites, we must set before us the virtues of the holy servants of God, and we must not be afraid of persecution which they suffered willingly, and which always follows true godliness. But we must especially hold fast the doctrine of the apostles, the sum of which is this, that we are saved through faith in Christ Jesus.
(b) You thoroughly know not only what I taught and did, but also how I thought and was inclined.

But thou hast fully known my doctrine,.... This, with what follows, is said in opposition to the characters, principles, and practices of the above wicked men, and for the imitation and encouragement of Timothy, and of others, whether ministers or private believers: the apostle calls the doctrine he delivered, "my doctrine": not because he was the author of it, or that it was a scheme of principles formed and contrived by him; but because it was the doctrine which he had received from God, which was given him to preach, and which he did preach purely and faithfully; otherwise it was the doctrine of Christ, and the same with that which was preached by the rest of the apostles; and which was the doctrine of the Scriptures, and was according to godliness; and as preached by him, was all of a piece, and without any adulteration, or mixture, and was open and manifest, and well known to Timothy, and others; for he used no hidden things of dishonesty, nor did he conceal his principles, or keep back anything that was profitable. And as well known was his
manner of life; both his civil life, how he spent his time, not in ease and idleness, but oftentimes in labour with his own hands; nor did he live in a sensual and voluptuous manner, but frequently was in hunger, and thirst, and nakedness; and likewise his religious life, and conversation, not only in the church, which was spent in the ministry of the word, and ordinances; but in the world, which, by the grace of God, was in simplicity and godly sincerity, in a very just, holy, and unblamable manner: his life was agreeable to his doctrine, and ornamental to his profession: and even the secrets of his mind, his views, his aims and ends in all he did, which are signified by his
purpose, were open and manifest; and which were not to obtain glory and applause from men, nor to gather wealth and riches for himself; but that God might be glorified in the salvation of men; that Christ might be magnified both in his life and death; that his Gospel might be spread, his kingdom be enlarged, and that many souls might be converted and brought to the knowledge of him; and hence he became all things to all, that he might gain some. And as the doctrine of
faith, embraced, professed, and preached by him, was well known, so no less conspicuous was the grace of faith in him, with respect to his interest in God's everlasting love, in salvation by Jesus Christ, and in eternal glory and happiness; of which be had a full assurance, and which remained constant and firm in him to the end. Unless rather his faithfulness in the discharge of his ministerial work should be here designed, for which he was very remarkable; as also for his
longsuffering both towards those that were without, the open enemies and persecutors of the Gospel, and towards them that were within, the brethren, whose infirmities he bore; and also for the success of the Gospel as the husbandman has long patience, and waits long for the former and latter rain to which is added
charity; which suffers long, and is kind; and may include his love to God, to Christ, and to the souls of men; which was very great, and particularly to his countrymen, the Jews, and also to the Gentiles; and especially to the churches he was more immediately concerned with, and even to all the saints: this is left out in the Alexandrian copy: it follows,
patience; in bearing all indignities, reproaches, afflictions, and persecutions, for the sake of Christ and his Gospel; by which he was not in the least moved, but persevered with, great courage and constancy to the end.

The more fully we know the doctrine of Christ, as taught by the apostles, the more closely we shall cleave to it. When we know the afflictions of believers only in part, they tempt us to decline the cause for which they suffer. A form of godliness, a profession of Christian faith without a godly life, often is allowed to pass, while open profession of the truth as it is in Jesus, and resolute attention to the duties of godliness, stir up the scorn and enmity of the world. As good men, by the grace of God, grow better, so bad men, through the craft of Satan, and the power of their own corruptions, grow worse. The way of sin is down-hill; such go on from bad to worse, deceiving and being deceived. Those who deceive others, deceive themselves, as they will find at last, to their cost. The history of the outward church, awfully shows that the apostle spake this as he was moved by the Holy Ghost.

fully known--literally, "fully followed up" and traced; namely, with a view to following me as thy pattern, so far as I follow Christ; the same Greek as in Luke 1:3, "having had perfect understanding of all things." His pious mother Eunice and grandmother Lois would recommend him to study fully Paul's Christian course as a pattern. He had not been yet the companion of Paul at the time of the apostle's persecutions in Antioch, Iconium, and Lystra (Acts 13:50; Acts 14:5, Acts 14:19), but is first mentioned as such Acts 16:1-3. However, he was "a disciple" already, when introduced to us in Acts 16:1-3; and as Paul calls him "my own son in the faith," he must have been converted by the apostle previously; perhaps in the visit to those parts three years before. Hence arose Timothy's knowledge of Paul's persecutions, which were the common talk of the churches in those regions about the time of his conversion. The incidental allusion to them here forms an undesigned coincidence between the history and the Epistle, indicating genuineness [PALEY, HorÃ&brvbr; PaulinÃ&brvbr;]. A forger of Epistles from the Acts would never allude to Timothy's knowledge of persecutions, when that knowledge is not expressly mentioned in the history, but is only arrived at by indirect inference; also the omission of Derbe here, in the Epistle, is in minute accordance with the fact that in Derbe no persecution is mentioned in the history, though Derbe and Lystra are commonly mentioned together. The reason why he mentions his persecutions before Timothy became his companion, and not those subsequent, was because Timothy was familiar with the latter as an eye-witness and Paul needed not to remind him of them, but the former Timothy had traced up by seeking the information from others, especially as the date and scene of them was the date and scene of his own conversion.
doctrine--"teaching."
manner of life--"conduct," "behavior."
purpose--The Greek is elsewhere usually used of God's "purpose." But here, as in Acts 11:23, of Paul's determined "purpose of heart in cleaving unto the Lord." My set aim, or resolution, in my apostolic function, and in every action is, not my selfish gain, but the glory of God in Christ.
long-suffering--towards my adversaries, and the false teachers; towards brethren in bearing their infirmities; towards the unconverted, and the lapsed when penitent (2-Timothy 4:2; 2-Corinthians 6:6; Galatians 5:22; Ephesians 4:2; Colossians 3:12).
charity--love to all men.
patience--"endurance"; patient continuance in well-doing amidst adversities (2-Timothy 3:11; Romans 2:7).

Thou didst follow my teaching (Revision). Timothy had known his teaching and manner of life, and followed it.
Persecutions . . . at Antioch, at Iconium, at Lystra. See Acts, chapters 13, 14. These persecutions befell Paul in the part of Asia where Timothy was reared, and hence he would be familiar with all.
Out of them all the Lord delivered me. Hence, let Timothy cheerfully suffer, if need be, and trust the Lord.
All that will live godly. In that age persecution was inseparable from a devoted Christian life. The same has been true, to a certain extent, in all ages. If the church was less worldly it would be more persecuted.
Evil men and seducers. The men who hate the church shall become worse and worse.
Seducers. Enchanters, men who lead astray.