If a company were to set up a "Feedback Department" there might be difficult try to get personnel to staff it.
Because one thing for certain is that there will mostly be complaints coming to that department, and it will be day in day out.
There is only so much that one can take about complaints.
One possible burnout could be that there will be growing resentment within and it turns into bitterness.
In the 1st reading, the people complained about the lack of water, and they challenged Moses and Aaron.
It had been countless times that the people complained but this time it really got into Moses.
As much as he did what the Lord had instructed, Moses vented out his resentment and frustration on the people.
In the gospel, Jesus began to make it clear to His disciples that He was destined to go to Jerusalem and to suffer grievously at the hands of the elders and chief priests and scribes.
Then Peter began to remonstrate with Him, but Jesus rebuked him sharply.
Once again Jesus was teaching His disciples and also teaching us what it means to serve God and to serve others.
We have to be prepared for a thankless task as well as scorching complaints.
But God sees, and God knows how we try to bear it up.
He will bless us with His peace and joy, so that we will be able to focus on how Jesus had served us even to offering His life on the Cross.