In this series of beautifully crafted sermons, first delivered to the congregation of Boston's historic Park Street Church in 1937, Harold John Ockenga invites his listeners--then and now--to embrace the kind of historic Christianity that challenges the mind, transforms the behavior, and warms the heart. Calling Christianity ""a religion of the heart"" first and foremost, he explores the biblical foundations and practical implications of the religious heart, the wicked heart, the pricked heart, the contrite heart, the believing heart, the hardened heart, the burning heart, the pure heart, the troubled heart, and the loving heart. ""Harold John Ockenga's stirring challenge for the Christian church to rediscover its rich heritage as a 'religion of the heart' was first issued in 1937. Delivered as a series of sermons to his Park Street Church congregation in Boston, the gifted young preacher called his listeners to embrace the joys of true Biblical Christianity through a return to personal, experiential, and wholesome faith. As relevant today as it was in the twentieth century, Ockenga's sermons will encourage your heart, stretch your mind, and strengthen your faith."" Garth M. Rosell, Senior Research Professor of Church History, Gordon-Conwell Seminary Harold John Ockenga (1905-1985) studied at Taylor University, Princeton Theological Seminary, Westminster Theological Seminary, and the University of Pittsburgh. From 1931 to 1936 he served as pastor at Point Breeze Presbyterian Church in Pittsburgh, and from 1936 to 1969 as senior minister at historic Park Street Church in Boston. From his base at Park Street he rose to international prominence, becoming one of the most recognized leaders of the resurgent evangelical movement that swept across America and around the world during the 1940s and 1950s.