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
See Verses Found in Dictionary
And when you may fast, be not like the hypocrites, of a sad contenance: for they disfigure their faces, in order that they may appear unto the people fasting. Truly I say unto you, They exhaust their reward. But thou, fasting, anoint thy head, and wash thy face; read more. in order that thou mayest not appear unto the people fasting, but to thy Father who is in secret: and thy Father, who seeth in secret, will reward thee openly.
And He comes into the house of the chief ruler of the synagogue; And He sees a tumult, weeping and wailing much;
Rejoice with them that rejoice; weep with them that weep.
So comfort one another with these words.
because the Lamb in the midst of the throne will shepherdize them, and guide them to the fountains of the waters of life; and God will wipe every tear out of their eyes.