John 1:8-9
He was not the Light; it was to bear testimony to the Light that he appeared.
John 5:35
he was a burning and a shining lamp, and you chose to rejoice for a while in his light.
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.