Acts 26:15

"'Who art Thou, Lord?' I asked. "'I am Jesus whom you are persecuting,' the Lord replied.

Matthew 25:40

"But the King will answer them, "'In solemn truth I tell you that in so far as you rendered such services to one of the humblest of these my brethren, you rendered them to myself.'

Matthew 25:45

"But he will reply, "'In solemn truth I tell you that in so far as you withheld such services from one of the humblest of these, you withheld them from me.'

John 15:20-21

Bear in mind what I said to you, 'A servant is not superior to his master.' If they have persecuted me, they will also persecute you: if they have obeyed my teaching, they will obey yours also.

Treasury of Scripture Knowledge

Summary

And I said, Who art thou, Lord? And he said, I am Jesus whom thou persecutest.

Bible References

I am

Matthew 25:40
"But the King will answer them, "'In solemn truth I tell you that in so far as you rendered such services to one of the humblest of these my brethren, you rendered them to myself.'
John 15:20
Bear in mind what I said to you, 'A servant is not superior to his master.' If they have persecuted me, they will also persecute you: if they have obeyed my teaching, they will obey yours also.