John 1:8-9
He himself was not that Light, but came [only] to testify concerning that Light.
John 5:35
John was the lamp that was burning and glowing and you people were willing to enjoy the light that he projected for awhile.
Treasury of Scripture Knowledge
Summary
But Abishai the son of Zeruiah succoured him, and smote the Philistine, and killed him. Then the men of David sware unto him, saying, Thou shalt go no more out with us to battle, that thou quench not the light of Israel.