John 5:33

You have sent [an inquiry] to John [the Baptist] and he has testified [as an eyewitness] to the truth.

John 1:6-8

There came a man commissioned and sent from God, whose name was John.

John 1:15-27

John testified [repeatedly] about Him and has cried out [testifying officially for the record, with validity and relevance], “This was He of whom I said, ‘He who comes after me has a higher rank than I and has priority over me, for He existed before me.’”

John 1:29-34

The next day he saw Jesus coming to him and said, “Look! The Lamb of God who takes away the sin of the world!

John 3:26-36

So they came to John and said to him, “Rabbi (Teacher), the Man who was with you on the other side of the Jordan [at the Jordan River crossing]—and to whom you have testified—look, He is baptizing too, and everyone is going to Him!”

Treasury of Scripture Knowledge

Summary

Ye sent unto John, and he bare witness unto the truth.

Sent

General references

Bible References

Sent

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?”

He

John 1:6
There came a man commissioned and sent from God, whose name was John.
John 3:26
So they came to John and said to him, “Rabbi (Teacher), the Man who was with you on the other side of the Jordan [at the Jordan River crossing]—and to whom you have testified—look, He is baptizing too, and everyone is going to Him!”

General references

Acts 13:24
Before His coming John [the Baptist] had preached a baptism of repentance to all the people of Israel.