John Gill Commentary 1 Corinthians 4:12

"and we toil, working with our own hands: being reviled, we bless; being persecuted, we endure;" — 1 Corinthians 4:12 (ASV)

And labour, working with our own hands
As the apostle did at Corinth, (Acts 18:3) and elsewhere; partly to minister to his own necessities, and those of others; and partly that he might not be burdensome to the churches; and also to set an example of diligence and industry to others; though he had a right and power to claim a maintenance of those to whom he ministered.

Being reviled, we bless ;
as Christ commanded, (Matthew 5:44) and the apostle himself directed and exhorted to, (Romans 12:14)

being persecuted, we suffer it ;
that is, patiently; neither resisting our persecutors, nor murmuring and repining at our unhappy circumstances; but taking all in good part, as what is the will of God, and will make for his glory.