'Spirit' in the Bible

The one who keeps His commandments abides in Him, and He in him. We know by this that He abides in us, by the Spirit whom He has given us.

Beloved, 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.

By this you know the Spirit of God: every spirit that confesses that Jesus Christ has come in the flesh is from God;

and every spirit that does not confess Jesus is not from God; this is the spirit of the antichrist, of which you have heard that it is coming, and now it is already in the world.

We are from God; he who knows God listens to us; he who is not from God does not listen to us. By this we know the spirit of truth and the spirit of error.

By this we know that we abide in Him and He in us, because He has given us of His Spirit.

For there are three that testify:

the Spirit and the water and the blood; and the three are in agreement.