The Father sees what is done in secret and rewards sincere devotion.

Matthew 6:4, 6, 18

⁴That thine alms may be in secret: and thy Father which seeth in secret himself shall reward thee openly.

⁶But thou, when thou prayest, enter into thy closet, and when thou hast shut thy door, pray to thy Father which is in secret; and thy Father which seeth in secret shall reward thee openly.

¹⁸That thou appear not unto men to fast, but unto thy Father which is in secret: and thy Father, which seeth in secret, shall reward thee openly.