AUV(i)
22 Who is the liar? It is the person who denies that Jesus [truly] is the Christ [i.e., God’s specially chosen One]. This person is the antichrist [See verse 18]; he is the one who denies [the truth about] the Father and the Son.
23 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.
24 You people should continue [to practice] what you heard from the beginning [i.e., to love one another, See verses 7-11]. If you do, then you also will continue in [fellowship with] the Son, and with the Father.