Wake up and strengthen (stērison | στήρισον | aor act imperative 2 sg) the things that remain, which are about to die; for I have not found your works fully completed in the sight of my God.
Therefore I intend to keep on reminding you of these things, even though you know them and are established (estērigmenous | ἐστηριγμένους | perf pass ptcp acc pl masc) in the truth that you now have.
And the God of all grace, the one who has called you into his eternal glory in Christ, will, after you have suffered a little while, himself restore, confirm (stērixei | στηρίξει | fut act ind 3 sg), strengthen, and establish you.