I used to think that the tension between many being saved and few being saved was a tension between the gospels and Paul. I was wrong (it feels great to be wrong sometimes!)
"But small is the gate and narrow the road that leads to life, and only a few find it." (Mt.7:14)
"I say to you that many will come from the east and the west, and will take their places at the feast with Abraham, Isaac and Jacob in the kingdom of heaven." (Mt.8:11)
Scarcely a chapters distance between these two pericopes! Again:
"For many are invited, but few are chosen." (22:14). And: "Because of the increase of wickedness, the love of most will grow cold..." (24:12)
"This is my blood of the covenant, which is poured out for many for the forgiveness of sins." (26:28)
Interesting. Very interesting.