1 John 4:1
ESV - 1 Beloved, do not believe every spirit, but test the spirits to see whether they are from God, for many false prophets have gone out into the world.
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1 John 4:6 We are from God. Whoever knows God listens to us; whoever is not from God does not listen to us. By this we know the Spirit of truth and the spirit of error.
If you have the true spirit of God in your heart you will understand the tongue of God.
Jesus said, 'Those who have ears to hear listen to what the spirit says.'