Hearken unto me - This is designed to call the attention of the skeptical and unbelieving Jews to the important truth which he was delivering. Many among them might be disposed to say that the fulfillment was delayed, and he therefore calls upon them to attend particularly to his solemn declarations.
Ye stout-hearted - The phrase ‘stout-hearted’ would naturally, denote those who were bold and courageous. But here it evidently means those whose hearts were strong against God; who nerved themselves to resist and oppose his plans and government; who were stubborn and rebellious.