Luke 10:4 - Coke's Commentary on the Holy Bible

And salute no man by the way.— The instructions given to the seventy on this occasion, were nearly the same with those delivered to the twelve; concerning which, see the notes on Matthew 13. Only he ordered the seventy to spend no time in saluting such persons as they met on the road, the time assigned them for going through the cities being but short. The phrase salute no man by the way, implies the greatest dispatch, as is evident from 2 Kings 4:29. For the eastern salutations were exceedingly tedious,consisting of long wishes of happiness to the person saluted, and of very particular inquiries concerning his welfare.