The Apostle Paul
Philippians 4:9ESV·traditional attribution

What you have learned and received and heard and seen in me—practice these things, and the God of peace will be with you.

John Calvin Reformed @genevareformer

9. What things ye have learned, and received, and heard By this accumulation of terms he intimates, that he was assiduous in inculcating these things. “This was my doctrine — my instruction — my discourse among you.” Hypocrites, on the other hand, insisted upon nothing but ceremonies.

Matthew Henry Presbyterian @wholebiblehenry

The apostle begins the chapter with exhortations to divers Christian duties. I. To stedfastness in our Christian profession, Phi 4:1. It is inferred from the close of the foregoing chapter: Therefore stand fast, etc. Seeing our conversation is in heaven, and we look for the Saviour to come thence and fetch us thither, therefore let us stand fast.

Commenting on Philippians 4:1-9

John Gill Reformed Baptist @doctorgill

These things which ye have both learned,.... Meaning from himself, in a doctrinal way: and received; not only into their heads but hearts, had embraced cordially, with great affection, in the love thereof, as well as given a full assent to: and heard; either publicly or privately, from the pulpit, or in conversation; or had heard of him when absent, or from him when present...