In the opening two chapters of the first epistle of John, the apostle established the following impossibilities:
Fellowship with God While Walking in Darkness.
According to 1 Jn 1:6, the person willfully disobedient to God’s word is a liar- when he claims to have fellowship with God.
Live Perfectly Sinless
Although we are to aim at perfection (Matt. 5:48), we must realize that we shall continually fail short of the goal. The man who claims perfection is self-deceived and does not possess the truth (1 Jn 1:8).
Know Jesus and Obey Him Not
Although most everyone is nominally acquainted with Jesus, only the obedient have the personal relationship which allows us to know him and what he has done for us. Should the disobedient claim to have that knowledge, they are liars (1 Jn 2:4).
Be in the Light and Hate One’s brother
To be obedient to God and hate one’s brother are mutually exclusive. The man who thinks he is able to do both is still in spiritual darkness (1 Jn 2:9).
Conclusion: These are some things to think about whenever one thinks he can serve God and the world at the same time (Matt 6:24). As John concluded, “Love not the world, neither the things that are in the world. If any man love the world, the love of the Father is not in him. For all that is in the world, the lust of the flesh, and the lust of the eyes, and the pride of life, is not of the Father, but is of the world” (1 Jn 2:15,16).