NT.filter - akjv vow:

akjv@Acts:18:18 @ And Paul after this tarried there yet a good while, and then took his leave of the brothers, and sailed there into Syria, and with him Priscilla and Aquila; having shorn his head in Cenchrea: for he had a vow.

akjv@Acts:21:23 @ Do therefore this that we say to you: We have four men which have a vow on them;