Light
In 1 John 1:5, 'light' represents God's purity, holiness, and truth. It signifies the absence of darkness, which is equated with sin and falsehood.
The symbol of light underscores God's nature as perfectly holy and truthful. It calls believers to walk in the light, meaning to live in truth and righteousness, reflecting God's character.
In biblical times, light was a common metaphor for goodness, knowledge, and divine presence, contrasting with darkness, which symbolized evil and ignorance.