Luke 22:36
He said to them, "But now if you have a purse, take it, and also a bag; and if you don't have a sword, sell your cloak and buy one.
Back in chapter 10 he sent them out. Perhaps I am assuming they didn't take protection because the point of this period of ministry was to rely wholly on God.
1After this the Lord appointed seventy-two[
a] others and sent them two by two ahead of him to every town and place where he was about to go. 2 He told them, “The harvest is plentiful, but the workers are few. Ask the Lord of the harvest, therefore, to send out workers into his harvest field. 3 Go! I am sending you out like lambs among wolves. 4 Do not take a purse or bag or sandals; and do not greet anyone on the road.