Commentaries:
Barnes' Notes
At midnight I will rise to give thanks unto thee - In the usual times of repose; when men are commonly lying in unconscious slumber. My heart is so interested in thy law - my soul is so full - that I am kept wakeful by meditating upon it, and I arise from my bed and offer thee praise. The Hebrew here means, literally, "the half," or "halving of the night," the night considered as divided into two equal portions. The idea is, that his mind was so full of the subject that he would take this unusual time to give vent to his feelings. The mind may be so full of love to the law - the word - of God, that nothing will satisfy it but such unusual acts of devotion. The Saviour rose up a great while before day, and went out into a solitary place and there prayed Mark 1:35; and on one occasion at least he continued all night in prayer to God Luke 6:12.
Because of thy righteous judgments - I do this on account of the interest which I have in those judgments or laws of righteousness. I love them as laws; I love them as righteous laws.
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