John Wesley on 1 Peter 1:12

To whom - So searching. It was revealed, that not for themselves, but for us they ministered - They did not so much by those predictions serve themselves, or that generation, as they did us, who now enjoy what they saw afar off. With the Holy Ghost sent down from heaven - Confirmed by the inward, powerful testimony of the Holy Ghost, as well as the mighty effusion of his miraculous gifts. Which things angels desire to look into - A beautiful gradation; prophets, righteous men, kings, desired to see and hear what Christ did and taught. What the Holy Ghost taught concerning Christ the very angels long to know.