What harmony can there be between Christ and Beliar, or what business has a believer with an unbeliever?

in case I am detained, to let you see how people ought to behave within the household of God; it is the church of the living God, the pillar and bulwark of the Truth.

to the blare of a trumpet and to a Voice whose words made those who heard it refuse to hear another syllable

'As for the conqueror, I will make him a pillar in the temple of my God (nevermore shall he leave it), and I will inscribe on him the name of my God, the name of the city of my God (the new Jerusalem which descends out of heaven from my God), and my own new name.'