And they went forth, and preached every where, the Lord working with them, and confirming {f} the word with signs following. Amen.

(f) That is, the doctrine: therefore doctrine must go before and signs must follow after.

People's New Testament

16:20 They went forth, and preached every where. Acts of the Apostles is the history of their preaching. It should be studied to see how the Apostles understood and preached the Commission of the Lord. The Commission of Christ is to his Church; its field is the world; its work is to preach the gospel; its congregation embraces every creature; its offer is a free and full salvation; the conditions of salvation are faith in Christ, and obedience to him; the consequence of rejecting Christ's salvation is eternal condemnation.

Wesley's Notes

16:20 They preached every where - At the time St. Mark wrote, the apostles had already gone into all the known world, Rom 10:18; and each of them was there known where he preached: the name of Christ only was known throughout the world.

Jamieson-Fausset-Brown Bible Commentary

20. And they went forth, and preached everywhere, the Lord working with them, and confirming the word with signs following. Amen-We have in this closing verse a most important link of connection with the Acts of the Apostles, where He who directed all the movements of the infant Church is perpetually styled "The Lord"; thus illustrating His own promise for the rounding and building up of the Church, "Lo, I AM WITH You alway!"

Matthew Henry's Concise Commentary

16:19,20 After the Lord had spoken he went up into heaven. Sitting is a posture of rest, he had finished his work; and a posture of rule, he took possession of his kingdom. He sat at the right hand of God, which denotes his sovereign dignity and universal power. Whatever God does concerning us, gives to us, or accepts from us, it is by his Son. Now he is glorified with the glory he had before the world. The apostles went forth, and preached every where, far and near. Though the doctrine they preached was spiritual and heavenly, and directly contrary to the spirit and temper of the world; though it met with much opposition, and was wholly destitute of all worldly supports and advantages; yet in a few years the sound went forth unto the ends of the earth. Christ's ministers do not now need to work miracles to prove their message; the Scriptures are proved to be of Divine origin, and this renders those without excuse who reject or neglect them. The effects of the gospel, when faithfully preached, and truly believed, in changing the tempers and characters of mankind, form a constant proof, a miraculous proof, that the gospel is the power of God unto salvation, of all who believe.

Matthew Henry's Whole Bible Commentary

Verses 19-20

Here is, 1. Christ welcomed into the upper world (v. 19): After the Lord had spoken what he had to say to his disciples, he went up into heaven, in a cloud; which we have a particular account of (Acts 1:9), and he had not only an admission, but an abundant entrance, into his kingdom there; he was received up, received in state, with loud acclamations of the heavenly hosts; and he sat on the right hand of God: sitting in a posture of rest, for now he had finished his work, and a posture of rule, for now he took possession of his kingdom; he sat at the right hand of God, which denotes the sovereign dignity he is advanced to, and the universal agency he is entrusted with. Whatever God does concerning us, gives to us, or accepts from us, it is by his Son. Now he is glorified with the glory he had before the world.

2. Christ welcomed in this lower world; his being believed on in the world, and received up into glory, are put together, 1 Tim. 3:16. (1.) We have here the apostles working diligently for him; they went forth, and preached every where far and near. Though the doctrine they preached, was spiritual and heavenly, and directly contrary to the spirit and genius of the world, though it met with abundance of opposition, and was utterly destitute of all secular supports and advantages, yet the preachers of it were neither afraid nor ashamed; they were so industrious in spreading the gospel, that within a few years the sound of it went forth into the ends of the earth, Rom. 10:18. (2.) We have here God working effectually with them, to make their labours successful, by confirming the word with signs following, partly by the miracles that were wrought upon the bodies of the people, which were divine seals to the Christian doctrine, and partly by the influence it had upon the minds of the people, through the operation of the Spirit of God, see Heb. 2:4. These were properly signs following the word-the reformation of the world, the destruction of idolatry, the conversion of sinners, the comfort of saints; and these signs still follow it, and that they may do so more and more, for the honour of Christ and the good of mankind, the evangelist prays, and teaches us to say Amen. Father in heaven, thus let thy name be hallowed, and let thy kingdom come.