Knowing of whom thou hast learned,— Meaning himself, but modestly declining to say so. Timothy was to continue in these things, because he knew of whom he had learned them,—namely, of a true apostle; and that they were agreeable to the scripture of the Old Testament, with which he had been acquainted from his infancy, through the instructions of his grandmother and mother, who were both Jewesses. See ch. 2 Timothy 1:5.
Related Commentaries of 2 Timothy 3:14
2 Timothy 3:14
14 But continue thou in the things which thou hast learned and hast been assured of, knowing of whom thou hast learned them;