I'm sorry I was so unclear. When I say there will be some I don't expect, they won't be believers in other religions. There is only one way to heaven -- faith in Jesus.
"Jesus said to him, “I am the way, and the truth, and the life; no one comes to the Father but through Me." (John 14:6)
What I am talking about is we can't always rightly judge the fruits of salvation. One person might look like a Christian because they are trying so hard to earn their way to heaven by their own power that they do lots of "good", "Christian" things. Another person may not seem to do much but may be a quiet prayer warrior with deep faith that hates doing anything in public. God knows the heart.
It is not what we do, but what Jesus has done in us.
"If I speak with the tongues of men and of angels, but do not have love, I have become a noisy gong or a clanging cymbal. If I have the gift of prophecy, and know all mysteries and all knowledge; and if I have all faith, so as to remove mountains, but do not have love, I am nothing. And if I give all my possessions to feed the poor, and if I surrender my body to be burned, but do not have love, it profits me nothing." (1 Corinthians 13:1-3)
"“Not everyone who says to Me, ‘Lord, Lord,’ will enter the kingdom of heaven, but he who does the will of My Father who is in heaven will enter. Many will say to Me on that day, ‘Lord, Lord, did we not prophesy in Your name, and in Your name cast out demons, and in Your name perform many miracles?’ And then I will declare to them, ‘I never knew you; depart from Me, you who practice lawlessness.’" (Matthew 7:21-23)
Hopefully that clarifies things more. I didn't sleep well last night, so I'm not communicating very well this morning.