Psalms 94:4 - Matthew Poole's English Annotations on the Holy Bible

Utter; or, pour forth freely, constantly, abundantly, as a fountain doth waters, as this Hebrew word signifies. Hard things; grievous, and insolent, and intolerable words against thee and thy people; blasphemous, malicious, contemptuous, and minatory words. Boast themselves; boast of their invincible power, and prosperous success in their wicked designs.