Deuteronomy 2:1

We compassed mount Seir The mountainous part of Edom, or Idumea. Many days Even for thirty-eight years, which time they spent in tedious marches to and fro through that desert country, reaching from Kadesh to the Red sea, and in various encampments, till that race of murmurers was quite extinct, and then orders were given them to bend their course again toward Canaan, Deuteronomy 2:3.