The Apostle Paul
Ephesians 4:20ESV·traditional attribution

But that is not the way you learned Christ!—

John Calvin Reformed @genevareformer

20. But ye have not. He now draws a contrast of a Christian life, so as to make it evident how utterly inconsistent it is with the character of a godly man to defile himself regardlessly with the abominations of the Gentiles.

Matthew Henry Presbyterian @wholebiblehenry

The apostle having gone through his exhortation to mutual love, unity, and concord, in the foregoing verses, there follows in these an exhortation to Christian purity and holiness of heart and life, and that both more general (Eph 4:17-24) and in several particular instances, Eph 4:25-32.

Commenting on Ephesians 4:17-32

John Gill Reformed Baptist @doctorgill

But ye have not so learned Christ,.... Some distinguish these words, and make two propositions of them, "but ye not so", or "ye are not so, ye have learned Christ"; the first of these propositions has respect to what goes before, and suggests that regenerate persons are not as other men: they do not walk in the vanity of their minds as others, their minds...