Albert Barnes Commentary Psalms 119:45

"And I shall walk at liberty; For I have sought thy precepts." — Psalms 119:45 (ASV)

And I will walk at liberty - Margin, “at large.” Luther renders it, “freely.” The Septuagint, “in a broad place.” The Hebrew word means “wide, broad, large, spacious.” The reference is to what is free and open; that in which there are no limits, checks, or restraints; where a person does as they please.

The meaning here is that he would feel he was free. He would not be restrained by evil passions and corrupt desires. He would be delivered from those things that seemed to shackle his steps.

This does not refer here so much to external troubles or hindrances, to being oppressed and confined by external foes, as to internal enemies—to the servitude of sin, to the slavery of appetite and passion. Compare the notes at Romans 7:9-14. See also Job 36:16; Psalms 118:5. The margin well expresses the sense of the passage.

For I seek thy precepts - I seek or endeavor to obey them. I seek them as the guide of my life. I ask nothing else to direct me.