He took Paul's girdle,— This was in the manner of the ancient prophets, who frequently attended their predictions with significant and prophetic actions. See Jeremiah 13:1.
Related Commentaries of Acts 21:11
Acts 21:11
11 And when he was come unto us, he took Paul's girdle, and bound his own hands and feet, and said, Thus saith the Holy Ghost, So shall the Jews at Jerusalem bind the man that owneth this girdle, and shall deliver him into the hands of the Gentiles.