There is no new way for serving God, The bible is not a book of lofty suggestions, But is in fact a book of righteous commands from a Holy God. Ask for the old paths and you’ll find the power of God
Jer 6:16 Thus saith the LORD, Stand ye in the ways, and see, and ask for the old paths, where is the good way, and walk therein, and ye shall find rest for your souls. But they said, We will not walk therein.
It is to a nation who has lost it’s way that these words come from the mouth of God.