Wesley's Notes on the Bible
How long shall I take counsel in my soul, having sorrow in my heart daily? how long shall mine enemy be exalted over me?
13:2 How long - Shall I be in such perplexities, not knowing what course to take?
Consider and hear me, O LORD my God: lighten mine eyes, lest I sleep the sleep of death;
13:3 Lighten - Revive and comfort, and deliver me from the darkness of death, which is ready to come upon me.
Lest mine enemy say, I have prevailed against him; and those that trouble me rejoice when I am moved.
But I have trusted in thy mercy; my heart shall rejoice in thy salvation.
I will sing unto the LORD, because he hath dealt bountifully with me.
13:6 I will sing - It is a common thing for David and other prophets to speak of future deliverances as if they were already come, that so they may signify both the infallible certainty of the thing, and their firm assurance thereof.