Acts 18:18-19

And Paul, having tarried after this yet many days, took his leave of the brethren, and sailed thence for Syria, and with him Priscilla and Aquila: having shorn his head in Cenchreæ; for he had a vow. And they came to Ephesus, and he left them there: but he himself entered into the synagogue, and reasoned with the Jews.