We know in part now

We have Catholic and Protestant. Denominational and Non-denominational. Baptist, Methodist, Presbyterian, Pentecostal, Mennonite, Brethren, ect...

This could be a part of the explanation for that.

1 Corinthians 13:8-13 New American Standard Bible 8 "Love never fails; but if there are gifts of prophecy, they will be done away with; if there are tongues, they will cease; if there is knowledge, it will be done away with. 9 For we know in part and prophesy in part; 10 but when the perfect comes, the partial will be done away with. 11 When I was a child, I used to speak like a child, think like a child, reason like a child; when I became a man, I did away with childish things. 12 For now we see in a mirror dimly, but then face to face; now I know in part, but then I will know fully, just as I also have been fully known. 13 But now faith, hope, and love remain, these three; but the greatest of these is love."