'Purified' in the Bible

Next Moses killed it and took the blood and with his finger put some of it around on the horns of the altar and purified it [from sin]. Then he poured out the rest of the blood at the base of the altar and consecrated it, to make atonement for it.

Then she shall remain [intimately separated] thirty-three days to be purified from the blood; she shall not touch any consecrated thing nor enter the [courtyard of the] sanctuary until the days of her purification are over.

But if she gives birth to a female child, then she shall be unclean for two weeks, as during her monthly period, and she shall remain [intimately separated] sixty-six days to be purified from the blood.