You have commanded us to keep your precepts diligently.
All Commentaries on Psalms 119:4 Go To Psalms 119
George Leo Haydock
AD 1849
Diligently. Nimis. Literally, "too much. "But this is a Hebrew idiom, to imply the greatest diligence. (Haydock)
Some would refer it to "God's strong injunction "which is not necessary. The psalmist henceforward speaks to God. (Berthier)