NET
1 Dear friends, do not believe every spirit, but test the spirits to determine if they are from God, because many false prophets have gone out into the world.
Darby
1 Beloved, believe not every spirit, but prove the spirits, if they are of God; because many false prophets are gone out into the world.
KJV
1 Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.