4:18-22 When Christ began to preach, he began to gather disciples, who should be hearers, and afterwards preachers of his doctrine, who should be witnesses of his miracles, and afterwards testify concerning them. He went not to Herod's court, not to Jerusalem, among the chief priests and the elders, but to the sea of Galilee, among the fishermen. The same power which called Peter and Andrew, could have wrought upon Annas and Caiaphas, for with God nothing is impossible. But Christ chooses the foolish things of the world to confound the wise. Diligence in an honest calling is pleasing to Christ, and it is no hinderance to a holy life. Idle people are more open to the temptations of Satan than to the calls of God. It is a happy and hopeful thing to see children careful of their parents, and dutiful. When Christ comes, it is good to be found doing. Am I in Christ? is a very needful question to ask ourselves; and, next to that, Am I in my calling? They had followed Christ before, as common disciples, Joh 1:37; now they must leave their calling. Those who would follow Christ aright, must, at his command, leave all things to follow him, must be ready to part with them. This instance of the power of the Lord Jesus encourages us to depend upon his grace. He speaks, and it is done.

18. And Jesus, walking—The word "Jesus" here appears not to belong to the text, but to have been introduced from those portions of it which were transcribed to be used as church lessons; where it was naturally introduced as a connecting word at the commencement of a lesson.

by the Sea of Galilee, saw two brethren, Simon called Peter and Andrew his brother, casting a net into the sea; for they were fishers—"called Peter" for the reason mentioned in Mt 16:18.