▼3:1Or, ‘For Ignorances.’ The prayer of Habakkuk is probably best understood as a prayer for persons, rather than for mere situations of ignorance. Therefore, ‘ignorantiis’ is rendered as ‘those who are ignorant’ or ‘the ignorant.’(Conte)

▼3:1 For ignorances: That is, for the sins of his people. In the Hebrew, it is Sigionoth: which some take to signify a musical instrument, or tune; with which this sublime prayer and canticle was to be sung.(Challoner)