Isaiah 1:12
When you come to appear before Me,
What it says
God asks who required their trampling of His courts.
What it is doing
This verse shows that mere attendance in worship cannot please Him.
In context
10Hear the word of the LORD, 11“What good to Me is your multitude of sacrifices?” 12When you come to appear before Me, 13Bring your worthless offerings no more; 14I hate your New Moons 15When you spread out your hands in prayer, 16Wash and cleanse yourselves. 17Learn to do right; 18“Come now, let us reason together,” 19If you are willing and obedient, 20But if you resist and rebel,