Verses with the word chain in the New Testament (3 verses):

Acts 28:20
For this cause therefore have I called for you, to see you, and to speak with you: because that for the hope of Israel I am bound with this chain.

2 Timothy 1:16
The Lord give mercy unto the house of Onesiphorus; for he oft refreshed me, and was not ashamed of my chain:

Revelation 20:1
And I saw an angel come down from heaven, having the key of the bottomless pit and a great chain in his hand.