What does it mean that our rewards come from God?

The rewards mentioned in Matthew 6 refer to spiritual acknowledgement from God, rather than earthly admiration. When we give in the right spirit, motivated by love for God and a desire for His glory, we can trust that God will reward us, as noted in Matthew 6:4, where it states that our Father, who sees what is done in secret, will reward us openly. This underscores the truth that God is aware of our hearts and intentions, which leads to a far greater reward than any fleeting approval from man.