en_tn/1jn/05/11.md

And the witness is this

"This is what God says"

life

The word "life" throughout this letter refers to more than physical life. Here "life" refers to being alive spiritually. See how you translated this in 1 John 1:1. (See: rc://en/ta/man/translate/figs-abstractnouns)

this life is in his Son

"this life is through his Son" or "we will live forever if we are joined with his Son" or "we will live forever if we are united with his Son"

Son

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