2 Peter 1:15

I will endeavour. Or, “I shall be diligent.” Compare the phrase, “give diligence” (v. 10).

Decease. Gr. exodos, “exit,” “departure.” From exodos comes the English word “exodus.” Luke uses exodos in his Transfiguration story, when he records that Moses and Elijah spoke of Christ’s “decease [exodos] which he should accomplish at Jerusalem” (Luke 9:31). Note that Peter does not expect to be alive at the time of his Lord’s return; he accepts Christ’s prophecy concerning his death.

Always. Or, “at every time,” that is, as the need arises.

Remembrance. Peter hoped his readers would remember his words, which they had hidden in their hearts. But if they should forget, they could turn to his letter and refresh their memory with his wise counsel.