Every person who denies [the truth about] the Son [See 4:2-3], does not have the Father [living in his heart]; but, the person who confesses [the truth about] the Son has the Father [living in his heart] also.

But, if our hearts condemn us [for not demonstrating God's love for others], surely God, who is greater than our hearts [will also condemn us], because He knows all things.

And God lives in the heart of the person who [continually] obeys His commands, and he lives in [fellowship with] God. And here is [another] way we know that God lives in our hearts: It is by [means of] the Holy Spirit, whom God gave to us. [See Rom. 8:9, 11; James 4:5; I Cor. 6:19].