I must by all means keep the feast at Jerusalem — This was not from any apprehension that he was obliged in conscience to keep the Jewish feasts; but to take the opportunity of meeting a great number of his countrymen to whom he might preach Christ, or whom he might farther instruct, or free from the prejudices they had imbibed against him. But I will return to you — So he did, Acts 19:1.
Related Commentaries of Acts 18:21
Acts 18:21
21 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.