צֶ֥דֶק צֶ֖דֶק תִּרְדֹּ֑ף לְמַ֤עַן תִּֽחְיֶה֙ וְיָרַשְׁתָּ֣ אֶת־הָאָ֔רֶץ אֲשֶׁר־יְהוָ֥ה אֱלֹהֶ֖יךָ נֹתֵ֥ן לָֽךְ׃ (ס)
你要追求公義,唯獨公義,好使你存活,並承受永恆者你的上帝所賜給你的地。
Tze'enah Ure'enah
“Justice, justice shall you pursue” [16:20]. You should properly pursue and seek with your words. You should not speak falsely with your mouth and your heart is not in it. There were six steps going up to King Solomon’s throne. When King Solomon wanted to ascend it, they first called out, “you shall not judge unfairly” [16:19]. At the second step, they called out, “you shall show no partiality” [16:19]. At the third step, they called out, “you shall not take bribes” [16:19]. At the fourth step, they called out, “do not set up a sacred post” [16:21]. At the fifth step, they called out, “do not erect a stone pillar” [16:22]. At the sixth step, they called out, “you shall not sacrifice an ox” [17:1].5Deuteronomy Rabbah, 5.6.
Rashi
צדק צדק תרדף JUSTICE, JUSTICE SHALT THOU PURSUE — go to (search after) a reliable court (Sifrei Devarim 144:14; Sanhedrin 32b).
Ibn Ezra
Justice, justice Scripture addresses the litigants. The word appears twice: because one must pursue justice, whether it be to one’s gain, or to one’s loss; or the repetition denotes “time after time” — all the days of your life; or for emphasis.