John Trapp on Matthew 26:33

Verse 33. Though all men should be offended] Peter spake as he meant, but his heart deceived him, as did likewise Davids, Psal. 39. 1, 2, 3. and Orphah's, Ruth 1. 10. and those Israelites in the wildernesse, that were turned aside like deceitfull bowes, Psal. 78. 57. They levelled both eyes and arrowes (that is both purposes and promises) to the mark of amendment, and thought verily to hit: but their deceitfull hearts, as naughty bows, carried their arrows a clean contrary way. So did Peters here, so will the best of ours, if we watch them not.