en_tn_lite_do_not_use/1jn/01/07.md

walk in the light as he is in the light

Here "walk" is a metaphor for how a person lives or behaves. Here "light" is a metaphor for "good" or "right." Alternate translation: "do what is good as God is perfectly good" or "do what is right as God is perfectly right" (See: rc://en/ta/man/jit/figs-metaphor)

the blood of Jesus

This refers to the death of Jesus. (See: rc://en/ta/man/jit/figs-metonymy)

Son

This is an important title for Jesus, the Son of God. (See: rc://en/ta/man/translate/guidelines-sonofgodprinciples)