Despite the apostle Paul's conversion to Christianity he did not abandon the heart and essence of his Jewish heritage. He remembers that on the right side of every Jewish doorpost is a small piece of parchment inserted into the doorpost called a mezuzah. Written on the parchment are the lines of the Shema (Deuteronomy 6:4-9). What the mezuzah informed everyone who entered this home was the conviction "As for me and my home, we shall serve the Lord."
The great Jewish philosopher Maimonides explained what this meant to a faithful Jew: