1 John 4:6
Amplified Bible (AMP)
We are [children] of God. Whoever is learning to know God [progressively to perceive, recognize, and understand God by observation and experience, and to get an ever-clearer knowledge of Him] listens to us; and he who is not of God does not listen or pay attention to us. By this we know (recognize) the Spirit of Truth and the spirit of error.— 1 John 4:6 (AMP)