How do we know what is from God and what isn’t from God?  John encourages his readers to test and challenge everything they hear and see to verify if it is from the LORD.  There are certain markers that can help us know what is from God: the acknowledgement of Jesus as Lord, loving others, and loving God.  We are reminded to not simply accept everything but be discerning in what is good and right verses what is wrong and destructive.

¹Beloved, 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. ²By this you know the Spirit of God: every spirit that confesses that Jesus Christ has come in the flesh is from God, ³and every spirit that does not confess Jesus is not from God. This is the spirit of the antichrist, which you heard was coming and now is in the world already. ⁴Little children, you are from God and have overcome them, for he who is in you is greater than he who is in the world. ⁵They are from the world; therefore they speak from the world, and the world listens to them. ⁶We are from God. Whoever knows God listens to us; whoever is not from God does not listen to us. By this we know the Spirit of truth and the spirit of error.

⁷Beloved, let us love one another, for love is from God, and whoever loves has been born of God and knows God. ⁸Anyone who does not love does not know God, because God is love. ⁹In this the love of God was made manifest among us, that God sent his only Son into the world, so that we might live through him. ¹⁰In this is love, not that we have loved God but that he loved us and sent his Son to be the propitiation for our sins. ¹¹Beloved, if God so loved us, we also ought to love one another.