וְי֘וֹד֤וּ שָׁמַ֣יִם פִּלְאֲךָ֣ יְהוָ֑ה אַף־אֱ֝מֽוּנָתְךָ֗ בִּקְהַ֥ל קְדֹשִֽׁים׃
So shall the heavens praise Thy wonders, O LORD, Thy faithfulness also in the assembly of the holy ones.
Rashi on Psalms
And the heavens acknowledge Your wonder If You had kept Your promise.
Rashi on Psalms
and Your faithfulness in the congregation of the holy ones The realization of Your words they will acknowledge in the congregation of the holy ones.