'Signs' in the Bible

And Moses said to Aaron and to Eleazar and Ithamar, his sons, Do not let your hair be loose, and give no signs of grief; so that death may not overtake you, and his wrath come on all the people; but let there be weeping among your brothers and all the house of Israel for this burning of the Lord's fire.

And the leper who has the disease on him is to go about with signs of grief, with his hair loose and his mouth covered, crying, Unclean, unclean.

This is the law for all signs of the leper's disease and for skin diseases;

And for signs of disease in clothing, or in a house;

Nothing may be used for food with its blood in it; you may not make use of strange arts, or go in search of signs and wonders.