Amos 5:21 - Matthew Poole's English Annotations on the Holy Bible

I hate, I despise your feast days; impure and unholy they are, whatever they seem to be, and therefore the Lord hateth them, they are abomination to him, Proverbs 15:8 Isaiah 1:13,14. Worthless and contemptible they are, and as such God rejecteth them, Isaiah 1:10-12, &c. There is no goodness that I should value in them, there is all that vileness in them which attends deep hypocrisy, for which I do hate them. The apostate Israelites imitated the Jews in many things, amongst which they retained their festivals, in which they multiplied their ceremonial sacrifices; and yet God owns them not as his; but brands them with this, They are yours, therefore unwarrantable, will-worship, and displeasing to God. I will not smell a savour of rest or delight, I will not accept and be pleased with, Genesis 8:21, your solemn assemblies; appointed, as you think, on very weighty reasons, and by sufficient authority, and celebrated with rich sacrifices, in mighty crowds, and in excellent order; all is yours, not mine.