Matthew 6:18
King James Version
“That 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.”
Context
15But if ye forgive not men their trespasses, neither will your Father forgive your trespasses.
16Moreover when ye fast, be not, as the hypocrites, of a sad countenance: for they disfigure their faces, that they may appear unto men to fast. Verily I say unto you, They have their reward.
17But thou, when thou fastest, anoint thine head, and wash thy face;
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.
19Lay not up for yourselves treasures upon earth, where moth and rust doth corrupt, and where thieves break through and steal:
20But lay up for yourselves treasures in heaven, where neither moth nor rust doth corrupt, and where thieves do not break through nor steal:
21For where your treasure is, there will your heart be also.