G0951–βεβαίωσις–bebaiōsis

as it is righteous for me to think this as to you all, because ye have *me* in your hearts, and that both in my bonds and in the defence and confirmation of the glad tidings ye are all participators in my grace.

βεβαιώσει bebaiōsei “in confirmation”

For men indeed swear by a greater, and with them the oath is a term to all dispute, as making matters sure.

βεβαίωσιν bebaiōsin “confirmation”