G0278–ἀμεταμέλητος–ametamelētos

for unrepented of `are' the gifts and the calling of God;

ἀμεταμέλητα ametamelēta “Irrevocable”

for the sorrow toward God reformation to salvation not to be repented of doth work, and the sorrow of the world doth work death,

ἀμεταμέλητον ametamelēton “without regret”