Hello, Bonnie, you are right that the Psalms absolutely belong. Psalms shows us how to be worshippers like the book of Proverbs teaches us how to be wise. In Psalms 137:2 I would suggest that not only were they not willing to sing for their captors because it was the Lord’s song but also that they were so sorrowful that didn’t have the heart use them. They didn’t get rid of their incitements, they had hope that one day again they would have occasion to use them, so they laid them aside (hung on a willow) for at the present time they had no use for them; God turned their, feasting into mourning and their songs into weeping (Amos. 8:10). Negative psalm have its place because if the Psalms were only filled with positive messages that only show
