And the Lord said. Though the fruit of Paul's doctrine (in that he gained some daily to Christ) might have encouraged him to go forward, yet is the heavenly oracle added for his farther confirmation. Whence we gather that there were great combats set before him, and that he was sore tossed divers ways. For the Lord did never, without cause, [1] pour out his oracles; neither was it an ordinary thing with Paul to have visions, but the Lord used this kind of remedy when necessity did so require; and the thing itself doth show that there laid upon the holy man a great weight of business, under which he might not only sweat but almost faint, unless he had been set on foot again, and refreshed with some new help. And it is not without cause that he saith that his coming was base and contemptible, and that he was conversant there in fear and trembling, (1-Corinthians 2:3.) For mine own part, I think thus, that the wonderful power of the Spirit, wherewith Paul was endued before, was holpen with the oracle. Furthermore, forasmuch as the Scripture distinguisheth visions from dreams, as it appeareth by the twelfth chapter of the book of Numbers, (Numbers 12:6,) Luke meaneth by this word vision, that when Paul was in a trance he saw a certain shape or form whereby he knew that God was present with him. Assuredly, it is not to be doubted but that God appeared by some sign. Fear not. This exhortation showeth that Paul had cause of fear ministered unto him; for it had been a superfluous thing to correct fear, or to will him not to fear when all was well and quiet, and especially in a man so willing and ready. Furthermore, when the Lord (to the end he may have his servant to do his duty faithfully and stoutly) beginneth with restraining fear, by this we gather that nothing is more contrary to the pure and free preaching of the gospel than the straits of a faint heart. And surely experience doth show that none are faithful and courageous ministers of the word whom this fault doth hinder; and that those only are rightly prepared and addressed to teach to whom it is granted with boldness and courage of heart to overcome all manner [of] danger. In which respect, he writeth to Timothy that the spirit of fear is not given to the preachers of the gospel, but of power, and love, and sobriety, (2-Timothy 1:7.) Therefore, we must note the connection of words, Fear not, but speak, which is all one as if he should have said, Let not fear let thee to speak. And because fear doth not only make us altogether without tongue, but doth so bind us that we cannot purely and freely speak that which is needful. Christ touched both briefly. Speak, (saith he,) and hold not thy peace; that is, speak not with half thy mouth, as it is in the common proverb. But in these words there is prescribed to the ministers of the word of God a common rule, that they expound and lay open plainly, and without color or dissimulation, whatsoever the Lord will have made known to his Church; yea, let them keep back nothing which may make for the edifying or increase of God's Church.

Footnotes

1 - "Temere," at random.

By a vision - Compare the notes on Acts 9:10; Acts 16:9.
Be not afraid - Perhaps Paul might have been intimidated by the learning, refinement, and splendor of Corinth; perhaps embarrassed in view of his duty of addressing the rich, the polite, and the great. To this he may allude in 1-Corinthians 2:3; "And I was with you in weakness, and in fear, and in much trembling." In such circumstances it pleased God to meet him, and disarm his fears. This he did by assuring him of success. The fact that God had much people in that city Acts 18:10 was employed to remove his apprehensions. The prospect of success in the ministry, and the certainty of the presence of God, will take away the fear of the rich, the learned, and the great.

Then spake the Lord to Paul in the night by a vision - It is likely that Paul was at this time much discouraged by the violent opposition of the Jews, and probably was in danger of his life; see Acts 18:10; and might have been entertaining serious thoughts of ceasing to preach, or leaving Corinth. To prevent this, and comfort him, God was pleased to give him this vision.
Be not afraid - That this comfort and assurance were necessary himself shows us in his first epistle to these Corinthians, Acts 2:3 : I was with you in weakness, and in fear, and in much trembling.

(4) Then spake the Lord to Paul in the night by a vision, Be not afraid, but speak, and hold not thy peace:
(4) God does confirm and maintain the steadfastness of his servants.

Then spake the Lord to Paul in the night by a vision,.... On a certain night as he was asleep, the Lord Jesus Christ appeared to him in a dream, and spake after this manner to him:
be not afraid; it is very likely that after the baptism of Crispus and his family, and of many of the Corinthians, that both the Jews and the Gentiles were exasperated against the apostle; and his life might seem to be in danger, and he might be thinking of removing from hence for his preservation and safety; and might be advised to it by his friends, or at least that he should be incognito, and not be seen publicly: wherefore the Lord appears to him, and bids him not indulge any fears, or conceal himself and be silent,
but speak, and hold not thy peace; preach freely and boldly the Gospel without fear of men; the fear of men should not stop the mouths of Christ's ministers.

Then spake the Lord to Paul . . . by a vision, Be not afraid . . . no man shall set on thee to hurt thee, &c.--From this it would seem that these signal successes were stirring up the wrath of the unbelieving Jews, and probably the apostle feared being driven by violence, as before, from this scene of such promising labor. He is reassured, however, from above.