1 John 4:8
He who doesn’t love doesn’t know God, for God is love.
World English Bible (Public Domain)
In context
Before · 1 John 4:6–7
6We are of God. He who knows God listens to us. He who is not of God doesn’t listen to us. By this we know the spirit of truth, and the spirit of error. 7Beloved, let’s love one another, for love is of God; and everyone who loves has been born of God and knows God.
8He who doesn’t love doesn’t know God, for God is love.