I'm looking at Bullinger's treatment of Numbers in Scripture, and came across this insightful quote, which I thought I'd share.

Grace means favor. But what kind of favor? for favor is of many kinds. Favor shown to the miserable we call mercy; favor shown to the poor we call pity; favor shown to the suffering we call compassion; favour shown to the obstinate we call patience: but favor shown to the unworthy we call GRACE! This is favor indeed; favor which is truly Divine in its source and in its character. Light is thrown upon it in Romans 3:24, "being justified freely by His grace." The word here translated "freely" occurs again in John 15:25, and is translated "without a cause" ("they hated me without a cause"). Was there any real cause why they hated the Lord Jesus? No! Nor is there any cause in us why God should ever justify us. So we might read Romans 3:24 thus: "Being justified without a cause by His grace." Yes, this is grace indeed,—favor to the unworthy.