Romans 10:13
I believe the pastor is entirely correct. Everything he said is Biblically sound. There will be a reward system in the afterlife- Christ mentioned this several times. His disciples even tried to position themselves by trying to nail Him down about who would sit on His right hand. He rebuked them, telling them they didn't know what they were asking.
God knows every heart. We also must be cognizant that God's ways are not our ways. First of all, when God makes a promise - that is it. He NEVER goes back on it. Israel is STILL God's chosen nation.
Moreover, the rewards are God's to give, we have NO RIGHT to tell Him how to spend them.
Matthew 20: 1-16
1For the kingdom of heaven is like a landowner who went out early in the morning to hire workers for his vineyard. 2 He agreed to pay them a denarius for the day and sent them into his vineyard. 3 “About nine in the morning he went out and saw others standing in the marketplace doing nothing. 4 He told them, ‘You also go and work in my vineyard, and I will pay you whatever is right.’ 5 So they went. “He went out again about noon and about three in the afternoon and did the same thing. 6 About five in the afternoon he went out and found still others standing around. He asked them, ‘Why have you been standing here all day long doing nothing?’ 7 “‘Because no one has hired us,’ they answered. “He said to them, ‘You also go and work in my vineyard.’ 8 “When evening came, the owner of the vineyard said to his foreman, ‘Call the workers and pay them their wages, beginning with the last ones hired and going on to the first.’ 9 “The workers who were hired about five in the afternoon came and each received a denarius. 10 So when those came who were hired first, they expected to receive more. But each one of them also received a denarius. 11 When they received it, they began to grumble against the landowner. 12 ‘These who were hired last worked only one hour,’ they said, ‘and you have made them equal to us who have borne the burden of the work and the heat of the day.’ 13 “But he answered one of them, ‘I am not being unfair to you, friend. Didn’t you agree to work for a denarius? 14 Take your pay and go. I want to give the one who was hired last the same as I gave you. 15 Don’t I have the right to do what I want with my own money? Or are you envious because I am generous?’ 16 “So the last will be first, and the first will be last.”