Here "life" stands for the right to live forever by God's grace and love. See how you translated this in [1 John 1:1-2](../01/01.md). (See: [[rc://en/ta/man/translate/figs-abstractnouns]])
Being in a close relationship to the Son is spoken of as having the Son. AT: "He who believes in the Son of God has eternal life. He who does not believe in the Son of God does not have eternal life" (See: [[rc://en/ta/man/translate/figs-metaphor]])