'Undeserved' in the Bible

After all, what kind of credit is there if, when you do wrong and are punished for it, you endure it patiently? But if when you do what is right and patiently bear [undeserved] suffering, this finds favor with God.

By Silvanus, our faithful brother (as I consider him), I have written to you briefly, to counsel and testify that this is the true grace [the undeserved favor] of God. Stand firm in it!