The Jewish Uprising against Paul.
The reception at Jerusalem:
Related Commentaries of Acts 21:17
Acts 21:17-19
17 And when we were come to Jerusalem, the brethren received us gladly.
18 And the day following Paul went in with us unto James; and all the elders were present.
19 And when he had saluted them, he declared particularly what things God had wrought among the Gentiles by his ministry.