One of my most favorite verses is Psalm 128:1 that reflects the thought here:
"Blessed is everyone that feareth the LORD, that walketh in His ways."
To fear the LORD is to dread to disappoint, displease, or disobey Him. And Jesus spoke about it:
"And why call ye me, Lord, Lord, and do not the things which I say?" (Lk. 6:46 AV).
Why, indeed?
Obedience is better than sacrifice.