King James Bible
"And in the eighth day the flesh of his foreskin shall be circumcised."
The timing is precise and significant—eight days after birth allows the infant to stabilize while maintaining the covenant sign early in life. This specific day became a defining marker of Jewish identity and obedience to God's covenant with Abraham. This command establishes the physical act of circumcision as mandatory for male Israelites, marking them as members of God's covenant people. The procedure itself serves as a permanent bodily sign of separation unto God and commitment to His law.