Acts 18:19-21

19and he arrived at Ephesus, and left them there. But entering himself into the synagogue he reasoned with the Jews.

20And when they asked him that he would remain for a longer time [with them] he did not accede,

21but bade them farewell, saying, [I must by all means keep the coming feast at Jerusalem]; I will return to you again, if 1God will: and he sailed away from Ephesus.