וַיָּקֻ֜מוּ הַכֹּהֲנִ֤ים הַלְוִיִּם֙ וַיְבָרֲכ֣וּ אֶת־הָעָ֔ם וַיִּשָּׁמַ֖ע בְּקוֹלָ֑ם וַתָּב֧וֹא תְפִלָּתָ֛ם לִמְע֥וֹן קָדְשׁ֖וֹ לַשָּׁמָֽיִם׃ (פ)
Then the priests the Levites arose and blessed the people; and their voice was heard [of the LORD], and their prayer came up to His holy habitation, even unto heaven.
Radak
וזה שער השמים, an expression analogous to Chronicles II 30,27 ותבא תפלתם למעון קדשו לשמים, “their prayer reached the residence of His Holiness, to heaven.”