6:16 {5} Moreover when ye fast, be not, as the hypocrites, of a sad countenance: for they {f} disfigure their faces, that they may appear unto men to fast. Verily I say unto you, They have their reward.
(5) That is, those that desire a name of holiness by fasting.
(f) They do not let their original pallor to be seen, that is to say, they mar the natural colour of their faces, that they may seem lean and palefaced.
6:16 When ye fast. This is the third example of the right and wrong way of righteousness, in contrast. The same principle of doing nothing for mere show is still insisted upon. Fasting is not wrong, and, indeed, is often blessed richly, but not when our object is to appear to men to fast.
Of a sad countenance. It was common to assume a woe-begone look, put ashes upon the head, and even wear sackcloth, in order to show to the world deep humiliation. This is condemned.
6:16 When ye fast? - Our Lord does not enjoin either fasting, alms - deeds, or prayer: all these being duties which were before fully established in the Church of God. Disfigure - By the dust and ashes which they put upon their heads, as was usual at the times of solemn humiliation.
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, Ps 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.