I will give them an heart to know me] Intimating that man cannot know God to any purpose, untill God give him an understanding heart, 1 John 5:20. 2 Tim. 2. 7. an heart, &c.] Deuteronomy 30:6. Chap. 32. 39. Ezekiel 11:19. &36. 26, 27. they shall be my people, and I will be their God] Chap. 30. 22. and 31. 33. &32. 38. they shall return unto me with their whole heart] Sincerely, and intirely; not fainedly and haltingly; as formerly they had done. Chap. 3. 10. &29. 13. Psalms 119:3.