HaRav Tzvi Yehuda HaCohen Kook was the only son of HaRav Avraham Yitzhak HaCohen Kook, and the person closest to Rabbi Kook and his teachings. Dedicated to his father's vision of Torah and Am Yisrael, Rav Tzvi Yehuda worked throughout his life to edit and publish his father's prolific writings. This book marked the first time that Rav Tzvi Yehuda's lectures had been translated into English. The book's commentary presents an understanding of Rabbi Kook's vision and the unique era of redemption which he inspired the nation to see.