Infinitefaith, salvation has nothing to do with numbers. God is not obliged to save a certain number of people. Those who obey him will be saved, be they 98% of the world or just 2 or 3 individuals.
For example: God says:"Thou shall not kill." and it doesn't matter whether the number of murderers is small or large.
It is the people's fault if they don't enter the church. The other thing to keep in mind is that faith always leads to action. The way you believe affects your life. So those who believe in false religion will do things that the false religion wants. So they are to be lost even if salvation could be found outside the church.