ChristianAnswers.Net WebBible Encyclopedia
the process by which a person unclean, according to the Levitical law, and thereby cut off from the sanctuary and the festivals, was restored to the enjoyment of all these privileges
The great annual purification of the people was on the Day of Atonement (q.v.).
But, in the details of daily life, there were special causes of cermonial uncleanness which were severally provided for by ceremonial laws enacted for each separate case.
the case of the leper (Lev. 13, 14), and of the house defiled by leprosy (14:49-53; see also Matt. 8:2-4)
uncleanness from touching a dead body (Num. 19:11; Hos. 9:4; Hag. 2:13; Matt. 23:27; Luke 11:44)
the case of the high priest and of the Nazarite (Lev. 21:1-4, 10-11; Num. 6:6-7; Ezek. 44:25)
Purification was effected by…
bathing and washing the clothes (Lev. 14:8-9)
by washing the hands (Deut. 21:6; Matt. 27:24)
washing the hands and feet (Ex. 30:18-21; Hebrews 6:2)
“baptisms,” Revised Version marginal note, “washings” (Hebrews 9:10)
sprinkling with blood and water (Ex. 24:5-8; Hebrews 9:19), etc.
Allusions to this rite are found in Ps. 26:6; 51:7; Ezek. 36:25; Hebrews 10:22.