Journey to Mount Sinai - Exodus 16:31-20:21 God miraculously supplied food and water in the desert for the Israelites. In the Desert of Sin, he provided manna (Exodus 16:1-36). At Rephidim, he provided water from a rock (Exodus 17:1-7). Finally God brought them to the foot of Mount Sinai, where he gave them his holy laws.