Luke 10:1
After this the Lord appointed seventy-two others and sent them two by two ahead of him to every town and place where he was about to go — the appointment of the seventy-two is unique to Luke — a mission beyond the twelve. Seventy-two (or seventy, in some manuscripts) may echo the seventy elders of Moses (Numbers 11:16–17) or the seventy nations of Genesis 10. Two by two echoes the twelve's mission. Ahead of him: the seventy-two are advance scouts preparing the way.