G0951–βεβαίωσις–bebaiōsis

It is even right for me to think this way on behalf of all of you, because I have you in my heart, because, both in my bonds and in the defense and confirmation of the Gospel, you all are partakers with me of grace.

βεβαιώσει bebaiōsei “in confirmation”

For men indeed swear by a greater one, and in every dispute of theirs the oath is final for confirmation.

βεβαίωσιν bebaiōsin “confirmation”