3.

"Prove me, O Lord, and try me" (ver. 2). Lest, however, any of my secret sins should be hid from me, prove me, O Lord, and try me, making me known, not to Thee from whom nothing is hid, but to myself, and to men. "Burn my reins and my heart." Apply a remedial purgation, as it were fire, to my pleasures and thoughts. "For Thy mercy is before mine eyes" (ver. 3). For, that I be not consumed by that fire, not my merits, but Thy mercy, whereby Thou hast brought me on to such a life, is before my eyes. "And I have been pleasing in Thy truth." And since my own falsehood hath been displeasing to me, but Thy truth pleasing, I have myself been pleasing also with it and in it.