John Calvin Commentary Matthew 26:19

"And the disciples did as Jesus appointed them; and they made ready the passover." — Matthew 26:19 (ASV)

And the disciples did as Jesus had appointed them. The readiness with which the disciples comply ought to be observed as a proof of their holy submission; for a doubt might naturally arise, when searching for an unknown man, whether they would obtain from the master of the house what they asked by their Master’s command, while they were aware that everywhere he was not only despised but even hated. Yet they make no anxious inquiry about the result, but peacefully obey the injunction.

And if we desire to have our faith approved, we ought to abide by this rule: to be satisfied with the command alone, go forward wherever God commands, and, expecting the success which he promises, not to indulge in excessive anxiety.