Acts 21:26 in the King James Version
Then Paul took the men, and the next day purifying himself with them entered into the temple, to signify the accomplishment of the days of purification, until that an offering should be offered for every one of them.
Context
25 But concerning the Gentiles who believe, we have written our decision that they should observe no such thing, except that they should keep themselves from food offered to idols, from blood, from strangled things, and from sexual immorality.”
26 Then Paul took the men, and the next day purified himself and went with them into the temple, declaring the fulfillment of the days of purification, until the offering was offered for every one of them.
27 When the seven days were almost completed, the Jews from Asia, when they saw him in the temple, stirred up all the multitude and laid hands on him,