The sixty-third psalm is by the superscription referred to the time when David was "in the wilderness of Judah," which has led many readers to think of his long stay there during Saul's persecution. But the psalm certainly belongs to the period of his reign, as is obvious from its words, "_The king_ shall rejoice in God." It must therefore belong to his brief sojourn in the same wilderness on his flight to Mahanaim, when, as we read in 2 Sam., "The people were weary and hungry and thirsty in the wilderness." There is a beautiful progress of thought in it, which is very obvious if we notice the triple occurrence of the words "my soul," and their various connections--"my soul thirsteth," "my soul is satisfied," "my soul followeth hard after Thee;" or, in other words, the psalm is a transcript of the passage of a believing soul from longing through fruition to firm trust, in which it is sustained by the right hand of God. The first of these emotions, which is so natural to the fugitive in his sorrows, is expressed with singular poetic beauty in language borrowed from the ashen grey monotony of the waterless land in which he was. One of our most accurate and least imaginative travellers describes it thus: "There were no signs of vegetation, with the exception of a few reeds and rushes, and here and there a tamarisk." This lonely land, cracked with drought, as if gaping with chapped lips for the rain that comes not, is the image of his painful yearning for the Fountain of living waters. As his men plodded along over the burning marl, fainting for thirst and finding nothing in the dry torrent beds, so he longed for the refreshment of that gracious presence. Then he remembers how in happier days he had had the same desires, and they had been satisfied in the tabernacle. Probably the words should read, "Thus in the sanctuary have I gazed upon Thee, to see Thy power and Thy glory." In the desert and in the sanctuary his longing had been the same, but then he had been able to behold the symbol which bore the name, "the glory,"--and now he wanders far from it. How beautifully this regretful sense of absence from and pining after the ark is illustrated by those inimitably pathetic words of the fugitive's answer to the priests who desired to share his exile. "And the king said unto Zadok, Carry back the ark of God into the city. If I find favour in the eyes of the Lord, He will bring me again, and show me both it and His habitation."