What does Mark 11:6 mean?

Two disciples have come to a village on the Mount of Olives, possibly Bethphage, to retrieve a donkey jenny and her colt that are tied up in the street. Jesus warns the two that they will be challenged by men who are watching over the animals, and that they are to respond that the Lord needs the donkeys and will return them shortly (Mark 11:3). We aren't told who "the Lord" is. Some scholars think he is the owner of the donkey and her colt. Several people who know Lazarus and know he was raised from the dead have been coming to see Jesus (John 11:38–44; 12:9), so it's possible the owner is with Jesus in Bethany and gives his permission to use his animals. It's also possible that Jesus simply knew the donkey would be there, and that the owner would be willing to loan the animal.

We don't know if the men are in Bethphage, where Jesus will pass with the crowd shouting "Hosanna," or if the men know of Lazarus and that Jesus raised him from the dead. Undoubtedly, they will learn of the procession to Jerusalem, where branches and cloaks provided a path for the Messiah. And they will hear of the crucifixion. What these men do know is that two men have come to collect the donkeys, and they let Jesus' disciples do just that.

These puzzled men have a significant role in Jesus' triumphal entry not because of anything they do but because two disciples are obedient to Jesus' instruction. There is no telling how others could be invited into Jesus' story because we stepped out in faith and obeyed.