The Reward of Saints is from God
Source: TTT
Romans 2:7
To those who by perseverance in doing good seek glory, honor, and immortality, He will give eternal life.
Colossians 3:24
because you know that you will receive an inheritance from the Lord as your reward. It is the Lord Christ you are serving.
Hebrews 11:6
And without faith it is impossible to please God, because anyone who approaches Him must believe that He exists and that He rewards those who earnestly seek Him.