You may be referring to this from the Apostle Paul:
Romans 12:
I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service.
The “therefore” is referring to salvation by grace alone, is it not?
Grace and works must be kept separate in the New Covenant.
Works are a response to salvation not the causative agent of it
I disagree that grace and works must be kept separate in the New Covenant. John Calvin believed that while we are saved by grace alone, there would be a judgment on the White Throne to reward those save of the good works they had done. Secondly I believe most evangelicals would agree that after being saved their lives should reflect that faith by prayer, leading holy lives, and good works as well.
Good works are a symptom of Salvation.
When Jesus left the Earth, he commanded those around him to do things on Earth. He didn’t tell them to wait for Heaven.
One of the major reasons “Christians” quit going to church is because the “Christian” has either created God in his own image (an image not matched by any church) Or the “Christian” is unable to practice grace themselves.