This shows the folly of those that refuse instruction, for they might be happy and will not.

1. They might be happy. There are in man strong desires of happiness; God has provided for the accomplishment of those desires, and that would be sweet to the soul, whereas the pleasures of sense are grateful only to the carnal appetite. The desire of good men towards the favour of God and spiritual blessings brings that which is sweet to their souls; we know those that can say so by experience, Ps 4:6, Ps 4:7.
2. Yet they will not be happy; for it is an abomination to them to depart from evil, which is necessary to their being happy. Never let those expect any thing truly sweet to their souls that will not be persuaded to leave their sins, but that roll them under their tongues as a sweet morsel.