Exodus 15:22-24

Amplified Bible, Classic Edition

²² Then Moses led Israel onward from the Red Sea and they went into the Wilderness of Shur; they went three days [thirty-three miles] in the wilderness and found no water.

²³ When they came to Marah, they could not drink its waters for they were bitter; therefore it was named Marah [bitterness].

²⁴ The people murmured against Moses, saying, What shall we drink?