Why Should the Mighty Make Their Boast HAVEN—Composer Unknown Why Should the Mighty Make Their Boast 1 Why should the mighty make their boast, And heavenly grace despise? In their own arm they put their trust, And fill their mouth with lies. 2 Our God in vengeance shall destroy, And drive them from his face; No more shall they his church annoy, Nor find on earth a place. 3 But like a cultured olive-grove, Dressed in immortal green, Thy children, blooming in thy love, Amid thy courts are seen.