John Trapp on Lamentations 3:41

Ver. 41. Let us lift up our hearts with our hands] Holy hearts, pure hands. Inſtead of wrangling with God, as ver. 39. let us wraſtle with him in prayer: this is the only way to get off with comfort. Nazianzen ſaith, that the beſt work we can put our hands unto is, in coelos eas extendere, ad preceſque expandere, to lift them up to God in prayer. But then it muſt be with a true heart, Heb. 10.22. See Job 11, 13. with the Notes.