God is knowledge and truth. To speak of light in a philosophical sense you are speaking of knowledge and truth.
Light is a revealer. Jesus said, for every one that doeth evil hateth the light. Neither cometh to the light, lest his deeds should be reproved. But he that doeth truth cometh to the light, that his deeds may be made manifest, that they are wrought in God.
1 John 1:5
“This then is the message which we have heard of him and declare unto you, that God is light and in him is no darkness at all.”
God is pure. From a moral standpoint light stands for purity.
In the beginning was the Word and the Word was with God and the Word was God, the same was in the beginning with God.”
It is interesting that on the first day of creation in Genesis, God created the light.
God is light. Paul told Timothy that God dwells in a light that no man can approach. Here is no darkness at all in God. Light and darkness are mutually exclusive. You either walk in the light or you are walking in darkness.
God loves you and desires to fellowship with you. Each human being that comes near us becomes the object of our friendly sympathy; and the sacrifice of Christ has both put away the sin of the world and prevents sin from reigning in our mortal bodies.
We are in the truth,” but the actual and glorious result on God’s side; faithful and just on account of Christ’s sacrifice and our repentance. Our foolish presumption is regarded in its worst aspect: an impiety against God, whose word, revelation, appeal to our conscience, and witness by the Spirit.
In God all true perfections and excellencies must be understood eminently to concur
Some render it, “this is the promise”, that whereas God is light, such who walk in the light shall have communion with him and others shall not.