“Moreover 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.”
Why this verse matters:In this verse, Jesus teaches that fasting should not be done for outward appearances but in humility before God. It's a reminder that the true purpose of fasting is to seek God earnestly and not to impress others.