Acts 18:21
King James Version
But bade them farewell, saying, I must by all means keep this feast that cometh in Jerusalem: but I will return again unto you, if God will. And he sailed from Ephesus.
Acts 18:21 in context
And he came to Ephesus, and left them there: but he himself entered into the synagogue, and reasoned with the Jews.
When they desired him to tarry longer time with them, he consented not;
But bade them farewell, saying, I must by all means keep this feast that cometh in Jerusalem: but I will return again unto you, if God will. And he sailed from Ephesus.
And when he had landed at Caesarea, and gone up, and saluted the church, he went down to Antioch.
And after he had spent some time there, he departed, and went over all the country of Galatia and Phrygia in order, strengthening all the disciples.