יְהוָ֤ה ׀ נְחֵ֬נִי בְצִדְקָתֶ֗ךָ לְמַ֥עַן שׁוֹרְרָ֑י הושר [הַיְשַׁ֖ר] לְפָנַ֣י דַּרְכֶּֽךָ׃
永恆者啊，求你因那些窺伺我的仇敵，憑著你的公義引導我；求你使你的道路在我面前平直。
Rashi
upon those who stare at me Heb. בשורי, at those who stare at me, as (5:9): “those who lie in wait for me (בשוררי).”
Rashi
after their heart’s fantasies Heb. בשרירותלבם, after the views of their heart, as (above 5: 9): “because of those who lie in wait for me (שוררי).”
Radak
הוצא, the letter ו in the middle instead of the letter י is not unusual in verbs whose first root letter is supplanted by the letter ו. Nonetheless the ו is read as if it were a י. We have a similar construction in Psalms 5,9 הישר לפני דרכך, which is spelled הושר, “make Your way straight before me.” Proverbs 4,25 יישירו נגדך is another such example. The meaning of the instruction is: “take them out just as you have brought them in!”
Rashi
they lie in wait Heb. ישור. Comp. למען שוררי because of those who lie in wait for me (Psalms 27: 11), an expression of “I see him (אשורנו) but not near” (Num. 24:17).