What does Matthew 21:6 mean?

Jesus and His disciples have nearly reached Jerusalem. Jesus has directed two of the twelve to walk into a village nearby, untie a donkey and her colt they will find waiting there, and bring the animals to Him. He has told them what to say if anyone questions them: The Lord needs these animals (Matthew 21:1–5).

The two disciples do exactly as Jesus asked, apparently without questioning Him. The twelve have often showed they did not fully understand Jesus' words or His mission. They have revealed selfish pride and ambition in fighting among themselves. Jesus has even described them as having little faith, at times (Matthew 8:26). However, the disciples have always been pictured as faithful and obedient servants to the Lord, ready and willing to carry out His commands (Matthew 19:27). For three years, they have done as He asks even when they didn't understand the reasons behind His instructions.

Their loyalty and faithfulness to Him will be severely tested in the coming week, however (Matthew 17:22–23).