רֽוֹמְמ֡וּ יְה֘וָ֤ה אֱלֹהֵ֗ינוּ וְֽ֭הִשְׁתַּחֲווּ לַהֲדֹ֥ם רַגְלָ֗יו קָד֥וֹשׁ הֽוּא׃
Exalt ye the LORD our God, And prostrate yourselves at His footstool; Holy is He.
Read kabbalistic (mystical) interpretation of Psalms 99:5: and classical mystical sources.