the paper focuses on the first 5 books in Old Testament——Genesis,Exodus,Leviticus,Numbers,and Deuteronomy in the Holy Bible,which is also called Mosaic Law.Since it had a significant role in the Sacred Scripture,the teachings in those books would be the great material for analyzing God’s behavior.There are 6 main teachings in the books,and God’s thought and behaviors will be explained simply and briefly in both historical and text perspectives.