The sin of the Sabbath-breaker was the occasion that gave rise to God's commandment of Zizit to Israel. For He said to Moses, "dost thou know how it came to pass that this man broke the Sabbath?" Moses: "I do not know." God: "On week days he wore phylacteries on his head and phylacteries on his arm to remind him of his duties, but on the Sabbath day, on which no phylacteries may be worn, he had nothing to call his duties to his mind, and he broke the Sabbath. Go now, Moses, and find for Israel a commandment the observance of which is not limited to week days only, but which will influence them on Sabbath days and on holy days as well." Moses selected the commandment of Zizit, the sight of which will recall to the Israelites all the other commandments of God.