xii. 4-8.
"And she shall continue in the blood of her purifying three and thirty days; she shall touch no hallowed thing, nor come into the sanctuary, until the days of her purifying be fulfilled. But if she bear a maid child, then she shall be unclean two weeks, as in her impurity: and she shall continue in the blood of her purifying threescore and six days. And when the days of her purifying are fulfilled, for a son, or for a daughter, she shall bring a lamb of the first year for a burnt offering, and a young pigeon, or a turtledove, for a sin offering, unto the door of the tent of meeting, unto the priest: and he shall offer it before the Lord, and make atonement for her; and she shall be cleansed from the fountain of her blood. This is the law for her that beareth, whether a male or a female. And if her means suffice not for a lamb, then she shall take two turtledoves, or two young pigeons; the one for a burnt offering, and the other for a sin offering: and the priest shall make atonement for her, and she shall be clean."
Until the circumcision of the new-born child, on the eighth day, he was regarded by the law as ceremonially still in a state of nature, and therefore as symbolically unclean. For this reason, again, the mother who had brought him into the world, and whose life was so intimately connected with his life, was regarded as unclean also. Unclean, under analogous circumstances, according to the law of xv. 19, she was reckoned doubly unclean in this case,--unclean because of her issue, and unclean because of her connection with this child, uncircumcised and unclean. But when the symbolic cleansing of the child took place by the ordinance of circumcision, then her uncleanness, so far as occasioned by her immediate relation to him, came to an end. She was not indeed completely restored; for, according to the law, in her still continuing condition, it was impossible that she should be allowed to come into the tabernacle of the Lord, or touch any hallowed thing; but the ordinance which admitted her child, admitted her also again to the fellowship of the covenant people.
The longer period of forty--or, in the case of the birth of a female child, of twice forty--days must also be explained upon symbolical grounds. Some have indeed attempted to account for these periods, as also for the difference in their length in the two cases, by a reference to beliefs of the ancients with regard to the physical condition of the mother during these periods; but such notions of the ancients are not justified by facts; nor, especially, would they by any means account for the greatly prolonged period of eighty days in the case of the female child. It is possible that in the forty, and twice forty, we may have a reference to the forty weeks during which the life of the unborn child had been identified with that of the mother,--a child which, it must be remembered, according to the uniform Biblical view, was not innocent, but conceived in sin; for each week of which connection of life, the mother suffered a judicial exclusion of one, or, in the case of the birth of a daughter, of two days; the time being doubled in the latter case with allusion to the double curse which, according to Genesis, rested upon the woman, as "first in the transgression." But, apart from this, however difficult it may be to give a satisfactory explanation of the fact, it is certain that throughout Scripture the number forty appears to have a symbolic meaning; and one can usually trace in its application a reference, more or less distinct, to the conception of trial or testing. Thus for forty days was Moses in the mount,--a time of testing for Israel, as for him: forty days, the spies explored the promised land; forty years, Israel was tried in the wilderness; forty days, abode Elijah in the wilderness; forty days, also, was our Lord fasting in the wilderness; and forty days, again, He abode in resurrection life upon the earth.