NT.filter - kjv confirmation:

kjv@Philippians:1:7 @ Even as it is meet for me to think this of you all, because I have you in my heart; inasmuch as both in my bonds, and in the defence and confirmation of the gospel, ye all are partakers of my grace.

kjv@Hebrews:6:16 @ For men verily swear by the greater: and an oath for confirmation is to them an end of all strife.