These things I write to thee He holds out to Timothy the hope of his coming, partly in order to encourage him, and partly in order to repress the insolence of those who grew more haughty on account of his absence. And yet he does not make any feigned promise to Timothy, or terrify others through false presence; for he fully expected that he would come, as it is probable that he came, if he wrote this epistle at the time when he passed through Phrygia, as is related by Luke. (Acts 18:23.) Let us look on this as a proof how great was his anxiety for the churches, when he could not endure to delay for a short time a remedy for a present evil. Yet immediately afterwards he adds, that he wrote this epistle for the purpose of informing Timothy, if it should happen that he were delayed longer than he thought.

These things write I unto thee, hoping to come unto thee shortly - That is, he hoped to come there to give instructions personally, or to finish, himself, the work which he had commenced in Ephesus, and which had been interrupted by his being driven so unexpectedly away. This verse proves that the apostle Paul did not regard Timothy as the permanent diocesan bishop of Ephesus. Would any Episcopal bishop write this to another bishop? If Timothy were the permanent prelate of Ephesus, would Paul have intimated that he expected soon to come and take the work of completing the arrangements there into his own hands? In regard to his expectation of going soon to Ephesus, see the notes on 1-Timothy 1:3; compare the Introduction to the Epistle.

These things write I - That is: I write only these things; because I hope to come unto thee shortly.

(6) These things write I unto thee, hoping to come unto thee shortly:
(6) Paul purposing to add many particular things pertaining to the daily office of a pastor, speaks first a word or two concerning his coming to Timothy, that he should be so much the more careful, lest at his coming he might be reproved of negligence.

These things write I unto thee,.... Concerning the offices of bishops and deacons, their several qualifications, and the rules of judging of persons fit for such service:
hoping to come unto thee shortly; at Ephesus. He could not tell whether he could come or not, and therefore makes no promise, but hoped he should; and since it was uncertain, he thought fit to write the above things for his instruction and use.

The church is the house of God; he dwells there. The church holds forth the Scripture and the doctrine of Christ, as a pillar holds forth a proclamation. When a church ceases to be the pillar and ground of truth, we may and ought to forsake her; for our regard to truth should be first and greatest. The mystery of godliness is Christ. He is God, who was made flesh, and was manifest in the flesh. God was pleased to manifest himself to man, by his own Son taking the nature of man. Though reproached as a sinner, and put to death as a malefactor, Christ was raised again by the Spirit, and so was justified from all the false charges with which he was loaded. Angels ministered to him, for he is the Lord of angels. The Gentiles welcomed the gospel which the Jews rejected. Let us remember that God was manifest in the flesh, to take away our sins, to redeem us from all iniquity, and to purify unto himself a peculiar people, zealous of good works. These doctrines must be shown forth by the fruits of the Spirit in our lives.

write I . . . hoping--that is, "though I hope to come unto thee shortly" (1-Timothy 4:13). As his hope was not very confident (1-Timothy 3:15), he provides for Timothy's lengthened superintendence by giving him the preceding rules to guide him. He now proceeds to give more general instructions to him as an evangelist, having a "gift" committed to him (1-Timothy 4:14).
shortly--Greek, "sooner," namely, than is presupposed in the preceding directions given to him. See my Introduction on this verse. This verse best suits the theory that this First Epistle was not written after Paul's visit and departure from Ephesus (Acts 19:1-20:38) when he had resolved to winter at Corinth after passing the summer in Macedonia (1-Corinthians 16:6), but after his first imprisonment at Rome (Acts 28:17-31); probably at Corinth, where he might have some thoughts of going on to Epirus before returning to Ephesus [BIRKS].

These things I write, . . . hoping to come unto thee shortly. It is not certain that he was ever able to visit Ephesus again, though it is thought that he did on his way to Crete.
But if I tarry. In that case he wrote that Timothy might understand how to act.
Behave thyself in the house of God. Conduct thyself in the management of the church.
Which is the church of the living God. The house of God is not the temple of Diana, which stood there at Ephesus.
The pillar and ground of the truth. The church is the pillar and support of the truth because it preaches it to the world, preserves it, and transmits it from generation to generation.
Without controversy. Undoubtedly.
Great is the mystery of godliness. The mystery that God has revealed to us in the gospel in order to make men godly. The great things revealed in this mystery are next named, certainly wonderful things, well called great.
God was manifest in the flesh. Was manifested in Jesus Christ.
Justified in the Spirit. When, after his condemnation to death, the power of God raised him from the dead.
Seen of angels. The angels were at the open tomb and told the women of his resurrection.
Preached unto the Gentiles. A wonderful fact in the mind of a Jew like Paul, who had been trained to believe that the Gentiles were accursed.
Received up into glory. At the Ascension. Six elements enter into this mystery of godliness, elements all of which were fully revealed in the gospel. The mystery is not something incomprehensible, but the hidden wisdom of God revealed in the gospel; a sense similar to that in which mystery is always used in the Scriptures. Compare Matthew 13:11; Revelation 1:20; Revelation 17:5, Revelation 17:7.