"And the LORD called unto Moses, and spake unto him out of the tabernacle of the congregation, saying . . ." (Leviticus 1:1)
This introductory verse to what many erroneously consider a dry and difficult book of the Bible actually introduces a remarkable phenomenon. All the rest of the chapter consists of a direct quotation from the Lord Himself. In fact, most of the rest of the book also consists solely of the direct words of God, except for an occasional interjection of a statement that God was still speaking. In all, 717 of the 832 verses in Leviticus (that is 86 percent) consist of the very words of God, directly quoted. This is more than any other book of the Bible, except for the books of the prophets, some of which also consist almost entirely of verbatim statements from God. The same situation is found in lesser, but still substantial, degrees in other historical books, not to mention the extensive quotations from the sermons and discourses of Christ in the four gospels.
While it is true that the Holy Spirit used many different means by which to convey the Scriptures (all of which are verbally inspired and fully inerrant) to writing, it is also true that, on many occasions, what amounts to the "dictation" method was used by Him. Evangelicals have often been intimidated by the scientists' ridicule of this "mechanical theory" of inspiration, but they should not be. God is well able to use whatever means He chooses to reveal His word to men, and we should simply take Him at His word!
Leviticus is a guidebook for the consecration and cleansing of God's people--especially His priests. In the New Covenant, all believers are priests, and therefore are expected to be consecrated and pure. "But ye are a chosen generation, a royal priesthood, an holy nation, a peculiar people; that ye should shew forth the praises of him who hath called you out of darkness into his marvellous light" (1 Peter 2:9). HMM