What does 1 John 5:11 mean?
John has already mentioned "testimony" several times in the last few verses. Here he adds a sixth instance, including references to both eternal life from God and life in the Son. These are additional reassurances to the Christian. Using the tools John has provided in this letter, a Christian can be confident in their salvation.John has already mentioned "eternal life" in 1 John 1:2, 2:25, and 3:15. He will address it again in 1 John 5:13 and 20. Eternal life is central to the changed state of a believer (John 3:16). John's Gospel also mentions "eternal life" on numerous occasions, especially with Nicodemus in chapter 3, and the woman at the well in chapter 4.
John mentions the "Son" 22 times in this letter, repeatedly identifying Jesus' status as God's Son, and His relationship with God the Father. Life is "in his Son" and is not found outside of Jesus, a concept John will further develop in the next verse.