'From God' in the Bible

By this ye know the Spirit of God: every spirit who confesseth that Jesus the Messiah is come in the flesh, is from God.

And every spirit who confesseth not that Jesus the Messiah is come into the world, is not from God: and this is that spirit of antichrist which ye have heard that it is coming, and now is already in the world.

Beloved, let us love one another; because love is from God, and every one who loveth is born of God, and knoweth God.