John 1:8-9
He was not that light, but was sent to bear witness of the light.
John 5:35
He was indeed a burning and shining light, and for a while ye willingly rejoiced 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.