Matthew
Matthew 21:37ESV·traditional attribution

Finally he sent his son to them, saying, ‘They will respect my son.’

John Calvin Reformed @genevareformer

37. They will reverence my son. Strictly speaking, indeed, this thought does not apply to God; for He knew what would happen, and was not deceived by the expectation of a more agreeable result; but it is customary, “C’est la coustume de l’Escriture;” — “it is the custom of Scripture.” especially in parables, to ascribe to Him human feelings.

John Gill Reformed Baptist @doctorgill

But last of all,.... In the last times, in the last days, in the end of the world, the Jewish world, at the close of their ecclesiastic and civil state; after all the prophets had been sent, and finished their course, came the greatest prophet of all, to seal up the vision and prophecy: he sent unto them son; not a servant as before, but...

Albert Barnes Presbyterian @notesbybarnes

Verse 37. Last of all, etc. Mark adds, that this was an only son, greatly beloved. This beautifully and most tenderly exhibits the love of God, in sending his only Son, Jesus Christ, into the world to die for men. Long had he sent the prophets, and they had been persecuted and slain. There was no use in sending any more prophets to the people.