Thou hast commanded [us] to keep thy precepts diligently.
Ver. 4. Thou hast commanded us, &c.] These are verba vivenda, non legenda, words to be lived, and not read only, as one well saith of this whole psalm; neither is it enough that we understand or ponder God's precepts, but we must practise them, if we would be happy.
To keep thy precepts diligently] Nimis, valde, vehementer. Odi nimium diligentes, saith one; but where the business is weighty, and the failing dangerous, one can hardly be too diligent. Let a man here do his utmost, be shall not overdo.