The Apostle Paul
Colossians 1:28BSB·traditional attribution

We proclaim Him, admonishing and teaching everyone with all wisdom, so that we may present everyone perfect in Christ.

John Calvin Reformed @genevareformer

28. Whom we preach. Here he applies to his own preaching everything that he has previously declared as to the wonderful and adorable secret of God; and thus he explains what he had already touched upon as to the dispensation which had been committed to him; for he has it in view to adorn his apostleship, and to claim authority for his doctrine: for after...

Matthew Henry Presbyterian @wholebiblehenry

Here is a summary of the doctrine of the gospel concerning the great work of our redemption by Christ. It comes in here not as the matter of a sermon, but as the matter of a thanksgiving; for our salvation by Christ furnishes us with abundant matter of thanksgiving in every view of it: Giving thanks unto the Father, Col 1:12.

Commenting on Colossians 1:12-29

John Gill Reformed Baptist @doctorgill

Whom we preach,.... Under the above considerations; as the riches, the glory, and the mystery of the Gospel; as the hope set before lost sinners to lay hold upon; as the only Saviour and Redeemer, by whose righteousness believers are justified, through whose blood their sins are pardoned, by whose sacrifice and satisfaction atonement is made, and in whose person alone is acceptance with God...