New King James Version (NKJV)
Beloved, do not believe every spirit, but test the spirits, whether they are of God; because many false prophets have gone out into the world.

New International Version (NIV)
[On Denying the Incarnation] Dear friends, do not believe every spirit, but test the spirits to see whether they are from God, because many false prophets have gone out into the world.

English Standard Version (ESV)
[Test the Spirits] 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.

King James Version (KJV)
Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.