If you can't believe in God, chances are your God is too small.
The great difference between present-day Christianity and that of which we read in these letters is that to us it is primarily a performance, to them it was a real experience. To these men it is quite plainly the invasion of their lives by a new quality of life altogether. They do not hesitate to describe this as Christ living in them.
If you see the bandwagon you've missed it.