Veshamru means "and ye shall keep." It comes from Exodus 31:16-17, which is part of the commandment to observe the Sabbath day. Veshamru refers to a passage recited during Sabbath services. It emphasizes the importance of observing the Sabbath as a perpetual covenant between God and the Israelites, in accordance with the commandments given in the Torah. The passage serves as a reminder of the sanctity of the Sabbath and the obligation to rest and refrain from work on that day.