Mark 16:15-18
15. And he said unto them, Go ye into all the world, and preach the Gospel to every creature—See on Joh 20:19-23 and Lu 24:36-49.
16. He that believeth and is baptized—Baptism is here put for the external signature of the inner faith of the heart, just as "confessing with the mouth" is in Ro 10:10; and there also as here this outward manifestation, once mentioned as the proper fruit of faith, is not repeated in what follows (Ro 10:11).
shall be saved; but he that believeth not shall be damned—These awful issues of the reception or rejection of the Gospel, though often recorded in other connections, are given in this connection only by Mark.17, 18. And these signs shall follow them that believe . . . They shall take up serpents—These two verses also are peculiar to Mark.
The Ascension and Triumphant Proclamation of the Gospel Thereafter (Mr 16:19, 20).
Mark 16:20
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!"