1 John 3:11-15

Amplified Bible

¹¹ For this is the message which you [believers] have heard from the beginning [of your relationship with Christ], that we should [unselfishly] love and seek the best for one another; ¹² and not be like Cain, who was of the evil one and murdered his brother [Abel]. And why did he murder him? Because Cain’s deeds were evil, and his brother’s were righteous.

¹³ Do not be surprised, believers, if the world hates you. ¹⁴ We know that we have passed out of death into Life, because we love the brothers and sisters. He who does not love remains in [spiritual] death. ¹⁵ Everyone who hates (works against) his brother [in Christ] is [at heart] a murderer [by God’s standards]; and you know that no murderer has eternal life abiding in him.^(A)