Noah Webster's Dictionary (p. pr. & vb. n.) of Attest.

Multi-Version Concordance Attesting (2 Occurrences) Romans 4:11 Before, not after. And he received circumcision as a sign, a mark attesting the reality of the faith-righteousness which was his while still uncircumcised, that he might be the forefather of all those who believe even though they are uncircumcised--in order that this righteousness might be placed to their credit; (WEY) Ruth 4:7 Now this was the custom in former time in Israel concerning redeeming and concerning exchanging, to confirm all things: a man drew off his shoe, and gave it to his neighbour; and this was the attestation in Israel.-- (See RSV)