John 1:45 - Coke's Commentary on the Holy Bible

Of whom Moses—and the prophets, did write,— Whom, &c. have described. The verb Γραφω is frequently used in the same sense elsewhere; and in particular is justly rendered thus, Romans 10:5. It seems, Peter and Andrew, in their conversation with Philip, had persuaded him to believe on Jesus, byshewing him how the types and predictions of the law and the prophets were fulfilled in him. Perhaps, this was the method which Jesus himself had taken to confirm Peter and Andrew, Philip's instructors, in the good opinion they had conceived of him, by means of the testimonywhich their master, John the Baptist, had given concerning him; though the evangelist has not thought fit to mention this circumstance. Nathanael is thought, as we have observed on Matthew 10:2-4 to have been the same with Bartholomew, that is the son of Tholomew; and the supposition is probable, were it for no other reason but this, that all the other persons who became acquainted with Jesus at Jordan, when he was baptized, and who believed on him there, were chosen to be his apostles.