6 Bible Verses about Testing Spirits

Do not believe every spirit, beloved, but test the spirits to see whether they are of God; for many false prophets are gone out into the world.

to another the powers which work miracles, to another prophecy, to another the discernment of spirits; to another varieties of tongues, to another the interpretation of tongues.

By this you know the Spirit of God; every spirit that confesses that Jesus Christ is come in the flesh is from God; and every spirit which confesses him not, is not from God. And this is that spirit of Antichrist of which you have heard that it is coming, and that now it is already in the world. My little children, you are of God and have conquered them; because he that is within you is greater than he that is in the world.read more.
They are of the world, and for this reason they speak as of the world, and the world listens to them. But you are of God. He who is beginning to know God listens to us; he who is not of God does not listen to us. By this we may distinguish the spirit of truth from the spirit of error.

The Jews of Berea were more noble than those in Thessalonica, in that they very readily received the message with all readiness of mind, and day after day searched the Scriptures to see whether these things were so.

But try all, holding fast to the good.

and how from a child you have known the Holy Scriptures, which are able to make you wise unto salvation through faith in Christ Jesus. Every Scripture, seeing that it is God-breathed, is also profitable for teaching, for refutation, for correction, and for training in righteousness, so that the man of God may himself be complete, and completely equipped for every good work.