There is a vast difference in the doctrine of salvation for the lost, and the doctrine of rewards for the saved.
Salvation is “the gift of God; not as a result of works” (Ephesians 2:8-9).
Salvation is received by faith in the finished work of he Lord Jesus Christ (John 3:36).
Rewards are according to the works of the believer (Matthew 16:27).
A great Scripture on rewards is found in 1 Corinthians 3:8-15. Read more