John Trapp on Psalms 119:4

Verſ. 4 Thou haſt commanded us, &c.] Theſe are verba vivenda, non legenda, words to bee lived, and not read only, as one well ſaith of this whole Pſalm; neither is it enough that wee underſtand or ponder Gods Precepts, but wee muſt practice them, if wee would bee happy.

To keep thy Precepts diligently] Nimis, valde, vehementer. Odi nimium diligentes, ſaith One; but where the buſineſſe is weighty, and the failing dangerous, one can hardly bee too diligent. Let a man here do his utmoſt, hee ſhall not overdo.