עַתָּ֤ה יָדַ֗עְתִּי כִּ֤י הוֹשִׁ֥יעַ ׀ יְהוָ֗ה מְשִׁ֫יח֥וֹ יַ֭עֲנֵהוּ מִשְּׁמֵ֣י קָדְשׁ֑וֹ בִּ֝גְבֻר֗וֹת יֵ֣שַׁע יְמִינֽוֹ׃
Now know I that the LORD saveth His anointed; He will answer him from His holy heaven With the mighty acts of His saving right hand.
Read kabbalistic (mystical) interpretation of Psalms 20:7: and classical mystical sources.