וְאַתָּ֣ה יְ֭הוָה לְעוֹלָ֣ם תֵּשֵׁ֑ב וְ֝זִכְרְךָ֗ לְדֹ֣ר וָדֹֽר׃
Mas tú, SEÑOR, permanecerás para siempre, Y tu memoria para generación y generación.
Rashi on Psalms
But You Who will be enthroned forever, and Who swore to us by Yourself, just as You exist, it is incumbent upon You to fulfill it. Therefore...