Reference for Psalms 41:12

בְּזֹ֣את יָ֭דַעְתִּי כִּֽי־חָפַ֣צְתָּ בִּ֑י כִּ֤י לֹֽא־יָרִ֖יעַ אֹיְבִ֣י עָלָֽי׃

By this I know that Thou delightest in me, that mine enemy doth not triumph over me.