A wadi is a streambed that flows only in the rainy season. At the end of the Sermon on the Mount, Jesus warned about the foolish person who built his house on the sand rather than on rocky terrain. Then when the rains came, the house on the sandy floor of the wadi didn’t survive. Jesus’ way isn’t the easiest, but it is the most enduring for those willing to follow (Matthew 5:24-27).
The King’s Highway ran to the east of the Jordan River, all the way from Damascus in the north to the gulf in the south. The eastern invaders used this route in Abraham’s day (Genesis 14:5-7). Towards the end of Moses’ life, he attempted to lead Israel northwards from Sinai along the King’s Highway, but the Edomites (descendants of Esau) would not permit it (Numbers 20:14-21).