Summary
The chapter opens with the claim that those who believe Jesus is Christ are born of God and love him, which leads to love for other children of God. It connects this love with keeping God's commandments, describing them as not burdensome. It then argues that all born of God overcome the world, and that this victory is faith. The text stresses that only those who believe in Jesus as the Son of God truly overcome. It explains that Jesus came by water and blood and that the Spirit bears witness, identifying the Trinity as one. The passage lists the heavenly and earthly witnesses and emphasizes that God's testimony is superior to human testimony. It declares that belief in the Son gives an inner witness and that God offers eternal life through Him. It ends with assurances of answered prayer, warnings about sin, and exhortations to keep away from idols.