2 Corinthians 6:14 Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness?

The Apostle Paul uses 4 imageries to illustrate the distinct contrast between righteousness and unrighteousness or lawlessness as listed below:

Righteousness versus Lawlessness¹

Light Darkness

Christ Belial

Believer Unbeliever

Temple of God Idols

The imagery of light and darkness is the first. Jesus is called the Light, the Giver of eternal life as contrasted with the darkness of death by the Apostle John in John 1:4-7 In him (Jesus) was life; and the life was the light of men. And the light shineth in darkness; and the darkness comprehended it not. There was a man sent from God, whose name was John. The same came for a witness, to bear witness of the Light, that all men through him might believe. John the Baptiser was raised by God to bear witness of Jesus, called the Light. By Jesus, life is imparted to man. Jesus is the Giver of life.