Thus: "For all of His works are justice": He sits in judgment with everyone and gives him what he deserves. "a faithful G-d": trustworthy.
"without wrong": claiming what is His in the end. For not as His way is the way of flesh and blood. The way of flesh and blood: One deposits two hundred with his neighbor, and owes him one hundred. When he comes to claim his deposit, the neighbor says: Deduct the hundred that you owe me and here is the rest. But He who spoke and brought the world into being is not so; but He is "a faithful G-d without wrong" — He claims what is His in the end.