So will I sing praise unto thy name for ever - As the result of this gracious interposition. Compare the notes at Isaiah 38:20. The meaning is, that he would do this constantly. It would be the regular business of his life.
That I may daily perform my vows - The solemn promises which I have made in my exile; the purposes which I have expressed to devote myself to thee. Or, the language may have been used in a more general sense, denoting that, as a religious man, the vows of God were constantly on him, or that he had pledged himself to serve God faithfully and always, and that he could better perform this duty at the tabernacle - in the place consecrated to public worship - than he could in exile. He desired, therefore, to be restored to the sanctuary, that he might keep up the performance of the daily duties of religion without interruption or hindrance. The whole psalm indicates a fervent desire to be engaged in the worship and service of God; a desire to be with Him and to enjoy His favor on earth; a confident hope that he would be permitted to enjoy His presence forever.