John 9:36

"Who is he, Sir," he replied, "that I may believe on him."

Romans 10:14

How then shall thy call upon Him in whom they do not believe? And how are they to believe in One of whom they have never heard? And how shall they hear without a preacher?

Matthew 11:3

"Are you the Coming One, or are we to look for someone else?"

John 1:38

Then Jesus turned and saw them following him, and said, "What do you want?" They replied, "Rabbi" (which may be translated 'Teacher'), "where are you staying?"

Treasury of Scripture Knowledge

Summary

He answered and said, Who is he, Lord, that I might believe on him?

Bible References

Who

John 1:38
Then Jesus turned and saw them following him, and said, "What do you want?" They replied, "Rabbi" (which may be translated 'Teacher'), "where are you staying?"
Matthew 11:3
"Are you the Coming One, or are we to look for someone else?"