1 witness of Christ here, and 2 further echoes from the reading.
Then Paul answered, What mean ye to weep and to break mine heart? for I am ready not to be bound only, but also to die at Jerusalem for the name of the Lord Jesus. Acts 21:13
Paul's love for the Lord Jesus is stronger than his fear of prison or death. He is willing to give his life for Christ's name.
How we know: the verse itself names Him · a Church study aid lists it
And when he would not be persuaded, we ceased, saying, The will of the Lord be done. Acts 21:14
The disciples submit to the Lord's will, echoing the Savior's own words in Gethsemane. As Jesus went up to Jerusalem to suffer, Paul follows the same path of submission.
For the multitude of the people followed after, crying, Away with him. Acts 21:36
The Jerusalem mob shouts the same words the crowd shouted against Jesus before His Crucifixion. Paul, the disciple, shares in his Master's rejection.