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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When ye fast, don't put on a dismal air, as the hypocrites do, who look dejected, that men may take notice of their fasting: I assure you, they have their reward. but whenever you fast, anoint your head, and wash your face: read more. that your fasting may not be observed by men, but by your father, who is with you in your retirement, and your father who observes what you do in private, shall give you a reward.
being come to the house of the ruler of the synagogue, and seeing a tumultuous crowd of people weeping and howling,
bless them, but curse not. rejoice with those that do rejoice, and weep with those that weep.
therefore comfort one another with this information.
for the lamb who is in the midst before the throne, shall feed them, and shall lead them to living fountains of waters: and God shall wipe away all tears from their eyes.