1 John 5:2 in the King James Version
By this we know that we love the children of God, when we love God, and keep his commandments.
Context
1 Whoever believes that Jesus is the Christ has been born of God. Whoever loves the Father also loves the child who is born of him.
2 By this we know that we love the children of God, when we love God and keep his commandments.
3 For this is loving God, that we keep his commandments. His commandments are not grievous.