Compare Revelation 21. The identity of thought and language in Ezekiel, predicting the new kingdom of Israel, and in John, foretelling the kingdom of heaven, forces upon us the conclusion that the prophecy of Ezekiel has an ultimate reference to that climax which John plainly indicates.
One heart - So long as the Israelites were distracted by the service of many gods, such unity was impossible; but now, when they shall have taken away the “abominations” from the land, they shall be united in heart to serve the true God.
Stony heart ... heart of flesh - The heart unnaturally hardened, and the heart reawakened to feelings proper to man.