[Paul] took leave of them, saying, “I must by all means keep this coming feast in Jerusalem; but I will return again to you, God willing.” And he sailed from Ephesus.
As we saw in Acts 20:16, the apostle Paul planned his journeys around the biblical festivals. Here in Acts 18:21 he also explains his need to get to Jerusalem for one of the festivals.
Though it is not explicit about which festival, this passage gives more evidence of the continued importance of God’s festivals to the New Testament Church.
For more about the biblical festivals, see the second half of the free booklet From Holidays to Holy Days: God’s Plan for You.