Psalms of imprecation
Three psalms (58, 83 and 109) are omitted from the psalter cycle as heavily imprecatory in character. In the same way, some verses are omitted from certain psalms, as noted at the head of each. These texts are omitted because of the difficulty they can cause because of their psychology, even though the psalms of imprecation are used as prayer in the New Testament, for example, Revelation 6:10, and their purpose is in no sense to encourage cursing.
General Instruction of the Liturgy of the Hours, 131