וַיֵּ֡לֶךְ וַיִּשְׁלַח֩ אֶל־יְהוֹשָׁפָ֨ט מֶֽלֶךְ־יְהוּדָ֜ה לֵאמֹ֗ר מֶ֤לֶךְ מוֹאָב֙ פָּשַׁ֣ע בִּ֔י הֲתֵלֵ֥ךְ אִתִּ֛י אֶל־מוֹאָ֖ב לַמִּלְחָמָ֑ה וַיֹּ֣אמֶר אֶעֱלֶ֔ה כָּמ֧וֹנִי כָמ֛וֹךָ כְּעַמִּ֥י כְעַמֶּ֖ךָ כְּסוּסַ֥י כְּסוּסֶֽיךָ׃
Er sandte auch an Josafat, König von Jehuda, und ließ ihm sagen: Der König von Moab ist von mir abgefallen, willst du mit mir gegen Moab in den Krieg ziehen? [Josafat] ließ sagen: Ich will mit dir ziehen, ich wie du, mein Volk wie dein Volk, meine Rosse wie deine Rosse.
Chizkuni
מאחת מהנה, “of one of these;” the first letter מ in this expression is unnecessary, whereas the second letter מ introduces examples. An example of a similar construction is found in Hoseah 4,9: כעם ככהן, “ordinary people (will fare) as well as priests.” Another such construction can be found in Kings II 3,7: כמוני כמוך, כעמי כעמך, כסוסי כסוסיך, “I will do what you do; my troops will be your troops; my horses will be your horses.” A third example of such a construction is found in Psalms 139,12: כחשכה כאורה, “darkness is like light.”
Da'at Zekenim
ופשע, “He does so on occasion even when the sin represented an act of rebellion against Him.” (Compare Kings II 3,7) where this term is applied to the King of Moab.
Rashi
then I will be perfect Heb. איתם will be perfect. The Sages said (Mid. Ps. 19:17, Lev. Rabbah 5:8): To what can David be compared? To a Cuthite who goes from door to door, and they are more cunning in this matter than any other people. “Give me a drink of water,” something that costs no money. After drinking, he says, “Perhaps you have a small onion?” After he gives it to him, he says, “Is there an onion without salt?” After he gives it to him, he says, “Give me a little bread, so that the onion does not harm me.” So did David say at first concerning the inadvertent sins, and then concerning the willful sins, and afterwards concerning the rebellious sins. פשעים are rebellious sins, with which one intends to provoke, and so Scripture says (II Kings 3:7): “The king of Moab rebelled (פשע) against me.”