6 Bible Verses about Testing Spirits

Beloved, believe not every spirit, but prove the spirits, whether they are of God; because many false prophets are gone out into the world.

and to another workings of miracles; and to another prophecy; and to another discernings of spirits; to another divers kinds of tongues; and to another the interpretation of tongues:

Hereby know ye the Spirit of God: every spirit that confesseth that Jesus Christ is come in the flesh is of God: and every spirit that confesseth not Jesus is not of God: and this is the'spirit of the antichrist, whereof ye have heard that it cometh; and now it is in the world already. Ye are of God, my little children, and have overcome them: because greater is he that is in you than he that is in the world.read more.
They are of the world: therefore speak they as of the world, and the world heareth them. We are of God: he that knoweth God heareth us; he who is not of God heareth us not. By this we know the spirit of truth, and the spirit of error.

Now these were more noble than those in Thessalonica, in that they received the word with all readiness of the mind, examining the Scriptures daily, whether these things were so.

prove all things; hold fast that which is good;

And that from a babe thou hast known the sacred writings which are able to make thee wise unto salvation through faith which is in Christ Jesus. Every scripture inspired of God is also profitable for teaching, for reproof, for correction, for instruction which is in righteousness. That the man of God may be complete, furnished completely unto every good work.