From Matthew Henry’s Commentary on Luke 5:1-11
Note, Even the best men are sinful men, and should be ready upon all occasions to own it, and especially to own it to Jesus Christ; for to whom else, but to him who came into the world to save sinners, should sinful men apply themselves? [2.] His inference from it was what might have been just, though really it was not so. If I be a sinful man, as indeed I am, I ought to say, “Come to me, O Lord, or let me come to thee, or I am undone, for ever undone.” But, considering what reason sinful men have to tremble before the holy Lord God and to dread his wrath, Peter may well be excused, if, in a sense of his own sinfulness and vileness, he cried out on a sudden, Depart from me. Note, Those whom Christ designs to admit to the most intimate acquaintance with him he first makes sensible that they deserve to be set at the greatest distance from him. We must all own ourselves sinful men, and that therefore Jesus Christ might justly depart from us; but we must therefore fall down at his knees, to pray him that he would not depart; for woe unto us if he leave us, if the Saviour depart from the sinful man.