'Credentials' in the Bible
Jesus answered them, I have told you so, yet you do not believe Me [you do not trust Me and rely on Me]. The very works that I do by the power of My Father and in My Father's name bear witness concerning Me [they are My credentials and evidence in support of Me].
And when I arrive, I will send on those whom you approve and authorize with credentials to carry your gift [of charity] to Jerusalem.
Are we starting to commend ourselves again? Or we do not, like some [false teachers], need written credentials or letters of recommendation to you or from you, [do we]?
[No] you yourselves are our letter of recommendation (our credentials), written in your hearts, to be known (perceived, recognized) and read by everybody.
By ourselves we are not qualified to claim that anything comes from us. Rather, our credentials come from God,
For we are the circumcision, the ones who worship by the Spirit of God, exult in Christ Jesus, and do not rely on human credentials