If we are not taught by God man's heart language then we develope an image of a person that is not entirely correct. So even tho we think Tha Psalmist is being judgemental and mean the truth is that the Psalmist has no author to pronounce a curse according to what he thinks that about a person based upon the legal arguments in the Psalms. Only God has the right to take vengeance. This leaves us complete neutral in our judgements because the curses kill our desire to judge. So we are really trying to as it were put both of us before God. We being blessed deserve to be cursed. They who are cursed are without hope. We both share in total inability. And in this understanding we have pronounced the line of cursing and blessing. We are glory in God and we have given them a little rest in acknowledging their hopelessness and the need for God. In this way we have a heart to heart relationship.