en_tn_lite_do_not_use/jhn/20/31.md

but these have been written

You can translate this in an active form. Alternate translation: "but the author wrote about these signs" (See: rc://en/ta/man/jit/figs-activepassive)

Son of God

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

life in his name

Here "life" is a metonym that means Jesus gives life. Alternate translation: "you may have life because of Jesus" (See: rc://en/ta/man/jit/figs-metonymy)

life

This refers to spiritual life.