18 so that it will not be obvious to others that you are fasting, but only to your Father, who is unseen; and your Father, who sees what is done in secret, will reward you.
18 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.
18 that your fasting may not be seen by others but by your Father who is in secret. And your Father who sees in secret will reward you.
18 God doesn't require attention-getting devices. He won't overlook what you are doing; he'll reward you well. A Life of God-Worship
18 so that you do not appear to men to be fasting, but to your Father who is in the secret place; and your Father who sees in secret will reward you openly.
18 Then no one will notice that you are fasting, except your Father, who knows what you do in private. And your Father, who sees everything, will reward you.
Matthew Henry's Commentary on Matthew 6:18
Commentary on Matthew 6:16-18
(Read Matthew 6:16-18)
Religious fasting is a duty required of the disciples of Christ, but it is not so much a duty itself, as a means to dispose us for other duties. Fasting is the humbling of the soul, Psalm 35:13; that is the inside of the duty; let that, therefore, be thy principal care, and as to the outside of it, covet not to let it be seen. God sees in secret, and will reward openly.