Genesis 34:23

²¹These men are peaceable, let them dwell with us upon the land, and let them trade in it, and behold the land is extensive before them; we will take their daughters to us for wives, and we will give them our daughters.

²²Only on these terms will the men conform to us to dwell with us so as to be one people, if every male of us be circumcised, as they also are circumcised.

— Genesis 34:23 —

²⁴And all that went in at the gate of their city hearkened to Hamor and Shechem his son, and they were circumcised in the flesh of their foreskin every male.

²⁵And it came to pass on the third day, when they were in pain, the two sons of Jacob, Simeon and Levi, Dinah’s brethren, took each man his sword, and came upon the city securely, and slew every male.