John Mark
Mark 1:15BSB·traditional attribution

“The time is fulfilled,” He said, “and the kingdom of God is near. Repent and believe in the gospel!”

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. A general account of Christ's preaching in Galilee. John gives an account of his preaching in Judea, before this (ch. 2 and 3), which the other evangelists had omitted, who chiefly relate what occurred in Galilee, because that was least known at Jerusalem. Observe, 1. When Jesus began to preach in Galilee; After that John was put in prison.

Commenting on Mark 1:14-22

John Gill Reformed Baptist @doctorgill

And saying, the time is fulfilled,.... Either that which was fixed for the end of the law and prophets, the legal and Mosaic dispensation, and the Jewish church state; or the fulness of time for the Messiah's appearance in the world; which was agreed upon between the Father and the Son, was predicted in various prophecies, and the people of the Jews were in a...

Albert Barnes Presbyterian @notesbybarnes

Verse 15. The time is fulfilled. That is, the time for the appearance of the Messiah. The time, so long foretold, has come. The kingdom of God is at hand. . Repent ye. Exercise sorrow for sins, and turn from them. And believe the Gospel. Literally, trust in the gospel, or believe the good tidings--to wit, respecting salvation. . (q) "time is" (r) "repent ye" (s) "believe"