1 John 1:5-6

5This is the message [of God’s promised revelation] which we have heard from Him and now announce to you, that God is Light [He is holy, His message is truthful, He is perfect in righteousness], and in Him there is no darkness at all [no sin, no wickedness, no imperfection].

6If we say that we have fellowship with Him and yet walk in the darkness [of sin], we lie and do not practice the truth;