The Apostle Paul
Ephesians 4:15ESV·traditional attribution

Rather, speaking the truth in love, we are to grow up in every way into him who is the head, into Christ,

John Calvin Reformed @genevareformer

15. But, speaking the truth. Having already said that we ought not to be children, destitute of reason and judgment, he now enjoins us to grow up in the truth. “ ᾿Αληθεύοντες does not seem properly to denote so much ‘speaking the truth,’ as ‘embracing and adhering to it;’ and, to render the Christian perfect, he must add to this regard to truth, love, or universal affection and benevolence.

Matthew Henry Presbyterian @wholebiblehenry

Here the apostle proceeds to more particular exhortations. Two he enlarges upon in this chapter: - To unity an love, purity and holiness, which Christians should very much study. We do not walk worthy of the vocation wherewith we are called if we be not faithful friends to all Christians, and sworn enemies to all sin.

Commenting on Ephesians 4:2-16

John Gill Reformed Baptist @doctorgill

But speaking the truth in love,.... Either Christ himself, who is the truth, and is to be preached, and always spoken of with strong affection and love; or the Gospel, the word of truth, so called in opposition to that which is false and fictitious; and also to the law, which is shadowish; and on account of its author, the God of truth, and its...