George Haydock's Catholic Commentary
Psalms 9:37
or Hebrew Psalm x. Ver. 16. Shall. Or Hebrew, "have perished." In the prophetic style, things to come are spoken of as past, on account of their certainty. (Berthier) --- The wicked shall not appear in the kingdom of God, to pollute his earth. (Haydock) --- Ye nations which have seized the promised land, except not to keep possession. If God suffer the sinner for a while, it is because he is eternal, so that he will never let him escape. (Calmet)