Vouchsafe - Vine's Expository Dictionary of New Testament Words
Vouchsafe[ 1,,G3670, homologeo ]
to agree," is found in the best texts in Acts 7:17, and rendered "vouchsafed," RV, with reference to God's promise to Abraham; some mss. have omosen, "swore" (omnumi, "to swear"), as in AV. See CONFESS, PROFESS, PROMISE, THANKS, B, Note.