For what glory is it if, when you sin, you patiently endure beating? But if, when you do well, you patiently endure suffering, this is commendable with God.
this is acceptable with God: The Greek word used for "acceptable" is the same as the one used for "thankworthy" in verse 19 (Wuest, I Peter 66). So the word indicates not just ordinary action but action that is beyond what would normally be expected. Going beyond what would be normal human response by being patient when we are "buffeted" causes God to pronounce us "acceptable," and He is the supreme judge of what is acceptable and what is not.