Luke
Acts 2:25ESV·traditional attribution

For David says concerning him, “‘I saw the Lord always before me, for he is at my right hand that I may not be shaken;

John Calvin Reformed @genevareformer

25. The resurrection, “Christi,” of Christ. which was both declared and witnessed by certain and evident testimonies, and which might also have been gathered out of the continual doctrine of the prophets, was to be proved to the Jews as some new and strange thing. And no marvel. For we see that although Christ had oftentimes beat “Inculcasset,” inculcated.

Matthew Henry Presbyterian @wholebiblehenry

We have here the first-fruits of the Spirit in the sermon which Peter preached immediately, directed, not to those of other nations in a strange language (we are not told what answer he gave to those that were amazed, and said, What meaneth this?) but to the Jews in the vulgar language, even to those that mocked; for he begins with the notice of that...

Commenting on Acts 2:14-36

John Gill Reformed Baptist @doctorgill

For David speaketh concerning him,.... The Messiah, the Lord Jesus Christ, in Psa 16:8. The whole psalm belongs to the Messiah, and everything concerning the person in it agrees with him; such as his trust in God, Psa 16:1 as he was man and Mediator; his very great regard to the saints, and delight in them, Psa 16:2 his disregard to others who were hastening...