My little children [i.e., dear ones], I am writing this to you so that you will not sin anymore. But if anyone does sin, we have Someone to go to the Father on our behalf; it is Jesus Christ, the [only] righteous One.

And He is the One who provides a "covering over" [or atonement] for our sins [See Heb. 2:17; Dan. 9:24; II Chron. 29:24], and not for ours [who are already Christians] only, but also for the sins of the people of the whole world.

Here is the way God's love for us was demonstrated; He sent His one and only Son into the world so that we could have [spiritual] life through Him.

This Jesus is the one whose coming [to earth was introduced] by water [at His immersion. See Matt. 3:13] and [completed] by blood [at His crucifixion, John 19:17-37]. He did not come by the water only, but by the water and by the blood. And it is the Holy Spirit who gives testimony [at both of these events], because the Holy Spirit is [always] the truth. [See John 16:13].

We know that every person who has been [spiritually] conceived [by God and eventually born] does not continue in [a life of] sin, but God's one and only conceived [Son] keeps him [from continuing to sin], and the evil one [i.e., Satan] does not continue to touch him [i.e., continue to control his life].