Leviticus 15:14
And on the eighth day he shall take to him two turtledoves, or two young pigeons, and come before the LORD unto the door of the tabernacle of the congregation, and give them unto the priest: And on the eighth day he shall take to him two turtledoves, or two young pigeons, and come before the LORD unto the door of the tabernacle of the congregation, and give them unto the priest:
On the eighth day after his discharge has ended the man is to take for himself two turtledoves or two young pigeons and come before the Lord to the door of the tabernacle of the congregation and give them to the priest.
The surrounding chapter sets out simple rules of cleanliness and isolation to contain infectious disease, requiring that contact with the patient or with his bed or with a vessel he used be followed by washing and bathing with separation from others until evening, so that air and sunshine could complete disinfection. After recovery the patient was to observe seven days of cleansing and wash his clothes and bathe in running water, and these measures protected others and helped prevent epidemics.
The command belongs to the laws of cleansing for bodily uncleanness given to ancient Israel in Leviticus 12-15, regulating uncleanness and leprosy and governing sacrifices and offerings as part of the recurring service of the Levitical sanctuary. The order in that law is that after the prescribed period of purification the person was to be visibly clean before the ceremonial cleansing was made at the sanctuary with blood.
The offering is placed on the eighth day, after the discharge has ceased and the man has become clean, and the eighth day in this purification, as in other Levitical purifications, symbolizes the new creation.
The verse stands among God's mighty object-lessons in Leviticus emphasizing the exceeding sinfulness of sin, with leprosy presented as a fitting type of sin. The offering of birds it commands is a type of the Lord Jesus Christ, for each detail of such sacrifices had its meaning found in fuller form in the sacrifice, life, and work of Jesus Christ, and all the slain offerings point forward to the Lamb of God that takes away the sin of the world. The yearly round of this recurring service typified Christ's once-for-all ministry in the heavenly sanctuary, and seeing Him in these otherwise dry details of laws and regulations gives them new life and makes them a blessing to the reader, though spending much time on the meaning of the details is not comparatively profitable.
These cleansing commands are examples of truths by which God's people are to be cleansed and made fit for His Spirit to dwell in them, calling them not to fall away from cleansing and health reform but to walk in that light and become clean vessels prepared to receive the latter rain.