Less Than A Year Old
Most Relevant Verses
He who is eight days old among you shall be circumcised, every male throughout your generations, whether born in [your] house or bought with [your] money from any foreigner not of your offspring.
Your lamb or kid shall be without blemish, a male of the first year; you shall take it from the sheep or the goats.
And it occurred that on the eighth day, when they came to circumcise the child, they were intending to call him Zachariah after his father,
And [God] made with Abraham a covenant (an agreement to be religiously observed) of which circumcision was the seal. And under these circumstances [Abraham] became the father of Isaac and circumcised him on the eighth day; and Isaac [did so] when he became the father of Jacob, and Jacob [when each of his sons was born], the twelve patriarchs.
And those that are to be redeemed of them, from a month old shall you redeem, according to your estimate [of their age], for the fixed price of five shekels in silver, according to the shekel of the sanctuary, which is twenty gerahs.