And YHVH your God will circumcise your heart and the heart of your offspring, so that you will love YHVH your God with all your heart and with all your soul, that you may live.
Deuteronomy 30:6

Jeremiah 31 wasn't the first time God promised the New Covenant. It was first promised in the Garden and repeated here in Deuteronomy 30.

If you want life in the New Covenant, then love the Creator with all your being. #nitzavim #torah