There are a few things that are impossible according to the Bible. In other words, these are the things that a Christian cannot be or do. 1 Corinthians 10:21 expresses that a Christian cannot partake of God and of the devil. In other words, as a Christian, one must divorce himself of the worldly things to be in communion with Christ.

Points to ponder:
There are many Christians who want/claim to be in communion with Christ, but who are unwilling to let go of their worldly lusts and things that are contrary to Christ, that are part of this world. Are you like one of them? Am I like one of them? Think of the things that you partake of — the things that you are part of and more importantly the things that are part of you. Once you have that list, prayerfully commit those to the Lord Jesus Christ, seeking his strength to have communion with none other than Jesus Christ and remember, a Christian cannot partake of God and of the devil.

1 Corinthians 10:21 (KJV)
21 Ye cannot drink the cup of the Lord, and the cup of devils: ye cannot be partakers of the Lord’s table, and of the table of devils.