10 In this manifest are the children of God, and the children of the devil; every one who is not doing righteousness, is not of God, and he who is not loving his brother,
10
This is how we know who the children of God are and who the children of the devil are: Anyone who does not do what is right is not God’s child, nor is anyone who does not love their brother and sister.
Young's Literal Translation is in the public domain.