Whoever says he is in the light and hates his brother is still in darkness. Whoever loves his brother abides in the light, and in him there is no cause for stumbling. But whoever hates his brother is in the darkness and walks in the darkness, and does not know where he is going, because the darkness has blinded his eyes.
1 John 2:9-11 ESV
A person who says they are a Christian and yet shows hatred towards someone is a person residing in darkness with nothing more than a burning wooden match. They see what is in their immediate vicinity but can’t see the whole picture. Eventually their match burns out and they have nothing left but darkness; walking and stumbling to their destruction. A person who truly follows Jesus; who has the Light of the Holy Spirit residing in them sees the bigger picture. Instead of shadows and outlines, they see their neighbor as a child of God. The one who truly walks with Jesus, the Light of the world, walks in the light where darkness has been scattered. Their destination is Life eternal.
Beware what your source of light is, the wooden match of worldly pride, selfishness and self-righteousness or the Light of Christ. One will be extinguished and the other is eternal.