יִשְׂמַ֬ח צַדִּ֣יק בַּ֭יהוָה וְחָ֣סָה ב֑וֹ וְ֝יִתְהַֽלְל֗וּ כָּל־יִשְׁרֵי־לֵֽב׃
Rashi on Psalms
and all upright of heart will boast They will boast about the uprightness of their heart, and they will praise themselves because they are confident that the Holy One, blessed be He, will help them.