We all have hearts diseased with a disintegrated and coercive self-interest. Put simply, the reason people swear oaths is because their hearts lack integrity. Little white lies, polite untruths, exaggeration, spin, and flattery are all evidence of the problem. Jesus is warning us that the words we use are telling because they reveal our hearts. When our hearts are full of integrity, our yesses mean yes, and our no’s mean no. But when integrity is lacking, five evils unfold: it destroys community, disintegrates identity, desecrates others, decimates credibility, and leads to delusions thinking.