G-d your Lord, will circumcise your heart and the heart of your offspring, to love G-d, your Lord, with all your heart and with all your soul, that you may live. Ch.30/6

What does it mean that G-d will circumcise our hearts?

In Every Generation
The beginning of the parsha starts with the mitzvah of bringing Bikurim—bringing the first fruits to the Temple. Part of the mitzvah is to make a declaration, which begins as follows: Then you shall call out and say before G-d your Lord, “An Aramean would have destroyed my father, and he descended to Egypt and sojourned there, few in number, and there became a nation—great, strong, and numerous. (Ch.26/5)