Albert Barnes Commentary Psalms 119:44

"So shall I observe thy law continually For ever and ever." — Psalms 119:44 (ASV)

So shall I keep thy law continually forever and ever - At all times and in all places; in this world and the world to come. This indicates a purpose to do it, and an assurance that he would do it, if God should enable him to retain even the slightest hold on the truth.