In 1John 4:8,1John 4:16 it is told us that "GOD IS LOVE",,,when God,who is love enters into someone he leaves his "seed" 1John 3:9,,,
So God (IS LOVE),and so if God is entered into us and he leaves a part of himself in us(his seed),then the part that is left in us is Love. Since God is love(noun),then he being in us it then is impossible for us to hate another as well as it is impossible for God(who is love) to hate one of us(he created us and loved us all). This is well explained by John in the epistle 1John the concept being the same as the many instances in scripture stating he is the Lord of Host(host,Christ IN you),,,and is why John is explaining that we are to try every spirit 1John 4:1,,,it is the only way to differentiate between those who actually have the Holy Spirit in them from those who do not.