NT.filter - kjv vow:

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

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