You are adding a lot of words to scripture. I think you may not realize that you are inserting your dogma where it isn't actually written.
O foolish man, do you want evidence that faith without deeds is worthless?
By rewards, do you mean salvation? If so, then I agree, and so does Paul:
The one who sows to please his flesh, from the flesh will reap destruction; but the one who sows to please the Spirit, from the Spirit will reap eternal life.
Only God knows who will be saved. The bible is full of admonitions about cooperating with his will in order to be saved.
Matt 7:21
“Not everyone who calls out to me, ‘Lord! Lord!’ will enter the Kingdom of Heaven. Only those who actually do the will of my Father in heaven will enter.
John 15:10
10If you keep My commandments, you will remain in My love, just as I have kept My Father’s commandments and remain in His love.
Romans 8:17
Now if we are children, then we are heirs--heirs of God and co-heirs with Christ, if indeed we share in his sufferings in order that we may also share in his glory.
Colossians 1:24
Now I rejoice in my sufferings for you, and I fill up in my flesh what is lacking in regard to Christ's afflictions for the sake of His body, which is the church.
This theology of yours is too mixed up, I can’t even begin to reply.
Do you even know what ‘gift’ means’?
John 4:10 KJV
[10] Jesus answered and said unto her, If thou knewest the gift of God, and who it is that saith to thee, Give me to drink; thou wouldest have asked of him, and he would have given thee living water.
Acts 11:17 KJV
[17] Forasmuch then as God gave them the like gift as he did unto us, who believed on the Lord Jesus Christ; what was I, that I could withstand God?
Romans 5:15-18 KJV
[15] But not as the offence, so also is the free gift. For if through the offence of one many be dead, much more the grace of God, and the gift by grace, which is by one man, Jesus Christ, hath abounded unto many. [16] And not as it was by one that sinned, so is the gift: for the judgment was by one to condemnation, but the free gift is of many offences unto justification. [17] For if by one man's offence death reigned by one; much more they which receive abundance of grace and of the gift of righteousness shall reign in life by one, Jesus Christ.) [18] Therefore as by the offence of one judgment came upon all men to condemnation; even so by the righteousness of one the free gift came upon all men unto justification of life.
Romans 6:23 KJV
[23] For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord.
2 Corinthians 9:15 KJV
[15] Thanks be unto God for his unspeakable gift.
Ephesians 2:8 KJV
[8] For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
James 1:17 KJV
[17] Every good gift and every perfect gift is from above, and cometh down from the Father of lights, with whom is no variableness, neither shadow of turning.
These aren’t even speaking of the gifts of the Spirit.
Learn the meaning of gift and then maybe we can have a meaningful conversation.