Luke 3:15

Now the people were in a state of expectation, and all were wondering in their hearts about John, as to whether he was the Christ (the Messiah, the Anointed).

John 1:19-28

This is the testimony of John [the Baptist] when the Jews sent priests and Levites to him from Jerusalem to ask him, “Who are you?”

John 3:28-29

You yourselves are my witnesses that I stated, ‘I am not the Christ (the Messiah, the Anointed),’ but, ‘I have [only] been sent ahead of Him [as His appointed forerunner and messenger to announce and proclaim His coming].’

John 10:24

So the Jews surrounded Him and began saying to Him, “How long are You going to keep us in suspense? If You are [really] the Christ (the Messiah, the Anointed), tell us so plainly and openly.”

Treasury of Scripture Knowledge

Summary

And as the people were in expectation, and all men mused in their hearts of John, whether he were the Christ, or not;

Expectation

General references

Bible References

Expectation

John 10:24
So the Jews surrounded Him and began saying to Him, “How long are You going to keep us in suspense? If You are [really] the Christ (the Messiah, the Anointed), tell us so plainly and openly.”

Mused

John 1:19
This is the testimony of John [the Baptist] when the Jews sent priests and Levites to him from Jerusalem to ask him, “Who are you?”
John 3:28
You yourselves are my witnesses that I stated, ‘I am not the Christ (the Messiah, the Anointed),’ but, ‘I have [only] been sent ahead of Him [as His appointed forerunner and messenger to announce and proclaim His coming].’

General references

John 1:20
And he confessed [truthfully] and did not deny [that he was only a man], but acknowledged, “I am not the Christ (the Messiah, the Anointed)!”