Acts 21:26

A Jew would announce the completion of his vow to the priest and then seven days later present his offerings (cf. Numbers 6:13-20). The Law did not prescribe this week’s wait, but it was customary. Paul accompanied the four men into the temple and underwent the rites of purification with them because he was paying the expenses of their vow. A few expositors believed Paul compromised his convictions here. [Note: E.g., Morgan, p. 485.] But this is a minority opinion that I do not share. The Jews considered paying the charges for votive offerings an act of piety and a symbolic identification with the Jews. Herod Agrippa I had previously done this. [Note: Josephus, Antiquities of . . ., 19:6:1.]