Reference: Mourning Customs
Hastings
The Oriental expression of grief has a twofold relationship. Towards God it is marked by silent and reverent submission symbolized by placing the hand on the mouth. 'The Lord gave and the Lord hath taken away' (Job 1:21); 'I was dumb
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"And, when ye fast, be not as the hypocrites, of a sad countenance; for they disfigure their faces, that they may appear to men to fast. Verily I say to you, they receive their reward. But, when fasting, anoint your head, and wash your face, read more. that you appear not to men to be fasting, but to your Father Who is in secret; and your Father Who seeth in secret will recompense you.
And they come to the house of the synagogue-ruler; and He beholds a tumult, and people weeping and wailing greatly.
Be ready to rejoice with those who rejoice; to weep with those who weep;
So then, comfort one another with these words.
because the Lamb, Who is in the midst of the throne, will be their Shepherd, and will guide them to the fountains of the waters of life; and God will wipe away every tear from their eyes.