He is the one who comes after me, who is preferred before me, whose sandal strap I'm not worthy to loosen."

 (b) It can mean the darkness never overcame the light. Katalambanein ( G2638) can mean to pursue until one overtakes and so lays hold on and overcomes. This could mean that the darkness of the world had done everything possible to eliminate Jesus Christ, even to crucifying him, but it could never destroy him. This could be a reference to the crucified and conquering Christ. 