10:4

sandals: Referring, it seems, to an extra pair because Jesus told them not to carry sandals. It was common to take along extra sandals on a long journey, as the soles on one pair might wear out or the laces might break. When giving similar instructions on an earlier occasion, Jesus directed his disciples “to put [or, “bind”] on” the sandals they already owned. (Mr 6:8, 9) And as recorded at Mt 10:9, 10, he instructed them not to “acquire” sandals, that is, not to get some in addition to the ones they already had on.

greet anyone: Or “embrace anyone in greeting.” In certain situations, the Greek word a·spaʹzo·mai (“to greet”) may have involved more than saying “hello” or “good day.” It could have included the embraces and long conversation that may take place when friends meet. Jesus was not encouraging his disciples to be rude. Rather, he was emphasizing that his followers should avoid unnecessary distractions and make the most of their time. The prophet Elisha once gave similar instructions to his servant Gehazi. (2Ki 4:29) In both cases, the mission was urgent, so there was no time for delay.