And now, little children [i.e., dear ones], continue to live in [fellowship with] Christ, so that when He appears, we may have boldness and not have [any reason] to be ashamed in front of Him at His [second] coming.

Dearly loved ones, we are God's children now, but it has not yet been revealed [to us] what we will be [in the future life, Luke 20:34-36]. But, we do know this, however, that when Jesus is revealed [i.e., at His second coming], we will be like Him [I Cor. 15:49], for we will see what He really looks like!

not [hate each other] the way Cain did, who belonged to the evil one [i.e., Satan], when he murdered his brother [Abel]. And why did he murder him? It was because his [own] actions were evil and his brother's were righteous [See Heb. 11:4].

This is [one] way we know that we love God's [spiritually reborn] children: [It is] when we love God and obey what He commands us to do.