John 1:8-9
He was not the Light, but sent that he should bear testimony concerning the Light.
John 5:35
He was a lamp glowing and luminous: and ye were pleased for a time to exult 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.