Marah (mâ'rah), bitterness. A place in the wilderness of Shur or Etham, three days' journey, Numbers 33:8-9, from the place at which the Israelites crossed the Red Sea. There was at Marah a spring of bitter water, sweetened subsequently by the casting in of a tree which "the Lord showed" to Moses. Exodus 15:23-24; Numbers 33:8-9. Probably ʾAin Hawarah, 47 miles from Ayun Mousa, where is a spring.