But thou hast fully known my doctrine,.... This, with what follows, is said in opposition to the characters, principles, and practices of the above wicked men, and for the imitation and encouragement of Timothy, and of others, whether ministers or private believers: the apostle calls the doctrine he delivered, "my doctrine": not because he was the author of it, or that it was a scheme of principles formed and contrived by him; but because it was the doctrine which he had received from God, which was given him to preach, and which he did preach purely and faithfully; otherwise it was the doctrine of Christ, and the same with that which was preached by the rest of the apostles; and which was the doctrine of the Scriptures, and was according to godliness; and as preached by him, was all of a piece, and without any adulteration, or mixture, and was open and manifest, and well known to Timothy, and others; for he used no hidden things of dishonesty, nor did he conceal his principles, or keep back anything that was profitable.
And as well known was hismanner of life; both his civil life, how he spent his time, not in ease and idleness, but oftentimes in labour with his own hands; nor did he live in a sensual and voluptuous manner, but frequently was in hunger, and thirst, and nakedness; and likewise his religious life, and conversation, not only in the church, which was spent in the ministry of the word, and ordinances; but in the world, which, by the grace of God, was in simplicity and godly sincerity, in a very just, holy, and unblamable manner: his life was agreeable to his doctrine, and ornamental to his profession: and even the secrets of his mind, his views, his aims and ends in all he did, which are signified by hispurpose, were open and manifest; and which were not to obtain glory and applause from men, nor to gather wealth and riches for himself; but that God might be glorified in the salvation of men; that Christ might be magnified both in his life and death; that his Gospel might be spread, his kingdom be enlarged, and that many souls might be converted and brought to the knowledge of him; and hence he became all things to all, that he might gain some.
And as the doctrine offaith, embraced, professed, and preached by him, was well known, so no less conspicuous was the grace of faith in him, with respect to his interest in God's everlasting love, in salvation by Jesus Christ, and in eternal glory and happiness; of which be had a full assurance, and which remained constant and firm in him to the end.