C. F. Keil and Franz Delitzsch on Psalms 83:17-18

Psa 83:17-18

The aim of the wish is that they in the midst of their downfall may lay hold upon the mercy of Jahve as their only deliverance: first they must come to nought, and only by giving Jahve the glory will they not be utterly destroyed. Side by side with אתּה, v. 19 a, is placed שׁמך as a second subject (cf. Psa 44:3; Psa 69:11). In view of Psa 83:17 וידעוּ (as in Psa 59:14) has not merely the sense of perceiving so far as the justice of the punishment is concerned; the knowledge which is unto salvation is not excluded. The end of the matter which the poet wishes to see brought about is this, that Jahve, that the God of revelation (שׁמך), may become the All-exalted One in the consciousness of the nations.