Isaiah 25:7

The face of the covering cast over all people... — To cover the face was, in the East, a sign of mourning for the dead (2 Samuel 19:4); and to destroy that covering is to overcome death, of which it is thus the symbol. With this there probably mingled another, though kindred, thought. The man whose face is thus covered cannot see the light, and the “covering” represents the veil (2 Corinthians 3:15) which hinders men from knowing God. The final victory of God includes a triumph over ignorance and sorrow, as well as over sin and death.