Adam Clarke on Numbers 12:16

The wilderness of Paran - This could not be the same Paran with that mentioned Deu 1:1, for that was on the borders of the promised land, see the note on Deu 1:1, Deu 1:2; they were long near the borders of Canaan, and might have speedily entered into it, had it not been for their provocations and iniquities. They spent thirty-eight years in a journey which might have been accomplished in a few weeks! How many through their unfaithfulness have been many years in gaining that for which, in the ordinary procedure of Divine grace, a few days had been sufficient! How much ground may a man lose in the Divine life by one act of unfaithfulness or transgression! Israel wandered in the wilderness because Israel despised the pleasant land, and did not give credence to the word of the Lord. They would have a golden calf, and they had nothing but tribulation and woe in return.