The apostles and the believers throughout Judea heard that the Gentiles also had received the word of God. 2 So when Peter went up to Jerusalem, the circumcised believers criticized him 3 and said, “You went into the house of uncircumcised men and ate with them.” Acts 11:1-3
I used to think that complaining and “bellyaching” was reserved for those of us in the modern era, but this simple passage proves otherwise.
Moses had his dissenters. King David had a number of different people who criticized his actions. Criticizing is part of the human fabric it seems.
Often the best way to combat those critical of your actions is to confront the issue straight on and with facts. It can be discouraging that complainers and critics exist even in the church, but it should never be a deterrent for you doing what you know God has called you to do. If they have valid concerns, address them. Otherwise, pray for them and move on.