God is Light
What does John mean by the statement 'God is light'. He means His excellency, His beauty, His holiness and purity. The idea of light elsewhere in John's writings and in the old testament is linked to revelation, to truth. There is no darkness in Him. What is meant by darkness? Unholiness, deceit, impurity, mixture.
God is Light
5 Καὶ ⸉ἔστιν αὕτη⸊ ἡ ⸀ἀγγελία ἣν ἀκηκόαμεν ἀπʼ αὐτοῦ καὶ ἀναγγέλλομεν ὑμῖν,* ὅτι ὁ θεὸς φῶς ἐστιν καὶ σκοτία ⸉1ἐν αὐτῷ οὐκ ἔστιν⸊ οὐδεμία.* 6 Ἐὰν εἴπωμεν ὅτι κοινωνίαν ἔχομεν μετʼ* αὐτοῦ καὶ ἐν τῷ σκότει περιπατῶμεν,* ψευδόμεθα καὶ οὐ ποιοῦμεν τὴν ἀλήθειαν·* 7 ἐὰν* ♦⸆ἐν τῷ φωτὶ περιπατῶμεν,* ὡς αὐτός ἐστιν ἐν τῷ φωτί, κοινωνίαν ἔχομεν μετʼ ἀλλήλων,* καὶ τὸ αἷμα ⸂Ἰησοῦ τοῦ υἱοῦ αὐτοῦ⸃ ⸀καθαρίζει ἡμᾶς ἀπὸ πάσης ἁμαρτίας.
5 This is the message we have heard from him and proclaim to you, that God is light, and in him is no darkness at all. 6 If we say we have fellowship with him while we walk in darkness, we lie and do not practice the truth. 7 But if we walk in the light, as he is in the light, we have fellowship with one another, and the blood of Jesus his Son cleanses us from all sin.
OPENING REMARKS
6 I am astonished that you are so quickly deserting him who called you in the grace of Christ and are turning to a different gospel— 7 not that there is another one, but there are some who trouble you and want to distort the gospel of Christ. 8 But even if we or an angel from heaven should preach to you a gospel contrary to the one we preached to you, let him be accursed. 9 As we have said before, so now I say again: If anyone is preaching to you a gospel contrary to the one you received, let him be accursed.