The Apostle Peter
2 Peter 3:2ESV·traditional attribution

that you should remember the predictions of the holy prophets and the commandment of the Lord and Savior through your apostles,

John Calvin Reformed @genevareformer

2. That ye may be mindful. By these words he intimates that we have enough in the writings of the prophets, and in the gospel, to stir us up, provided we be as diligent as it behoves us, in meditating on them; and that our minds sometimes contract a rust, or become bedimmed through darkness, is owing to our sloth.

Matthew Henry Presbyterian @wholebiblehenry

That the apostle might the better reach his end in writing this epistle, which is to make them steady and constant in a fiducial and practical remembrance of the doctrine of the gospel, he, 1. Expresses his special affection and tenderness for them, by calling them beloved, hereby evidencing that he added to godliness brotherly-kindness, as he had (Pe2 1:17) exhorted them to do.

Commenting on 2 Peter 3:1-2

John Gill Reformed Baptist @doctorgill

That ye may be mindful,.... This is an explanation of the above mentioned end of his writing this and the other epistle; which was, that those saints might be mindful of two things more especially: of the words which were spoken before by the holy prophets; that is, the prophets of the Old Testament, who were holy men of God, and therefore their words are...