Edom refuses passage to the Israelites
Moses asked the Edomites if the Israelites could pass through Edom. The Edomites refused, and the Israelites went around.
Key passages
Nu 20:14–21

From Kadesh Moses sent messengers to the king of Edom: “Thus your brother Israel has said, ‘You know all the hardship that has found us; our ancestors went down to Egypt, and we lived in Egypt a long time, and the Egyptians mistreated us and our ancestors. Then we cried to Yahweh, and …

See also
Dt 2:1–8; Jdg 11:17;