God is as clear today as He was to Nadab and Abihu in the Old Testament: He will be treated as holy by those who come into His presence (Lev. 10:1-3). Their deaths shows that one cannot get into too much instruction as to the right way and the wrong way to worship Him. In this treasured work, beloved Puritan pastor Jeremiah Burroughs masterfully gives guidelines to facilitate the reader to move closer to God in worship. Through 14 sermons, Burroughs carefully explains the right manner of worshipping God in the three great ordinances of hearing the Word, receiving the Lord’s Supper, and prayer. Burroughs shows that true worship is reverent, focused upon our holy God.