וַיֵּשֶׁב֩ אֲר֨וֹן יְהוָ֜ה בֵּ֣ית עֹבֵ֥ד אֱדֹ֛ם הַגִּתִּ֖י שְׁלֹשָׁ֣ה חֳדָשִׁ֑ים וַיְבָ֧רֶךְ יְהוָ֛ה אֶת־עֹבֵ֥ד אֱדֹ֖ם וְאֶת־כָּל־בֵּיתֽוֹ׃
I tak pozostała arka Wiekuistego w domu Obed Edoma, Gitejczyka, przez trzy miesiące, i pobłogosławił Wiekuisty Obed Edoma i wszystek dom jego.
Rabbeinu Bahya
ויברך ה' את בית המצרי בגלל יוסף, “G’d blessed the household of the Egyptian on account of Joseph. Here the Torah draws a comparison with the house of Oved Edom HaGitti whose house was host to the Holy Ark and whom G’d blessed for the sake of the Holy Ark (Samuel II 6,11). The blessing extended both to money and other objects.
Rabbeinu Bahya
A Midrashic approach: (Pessikta Zutrata) there are three things each of which can serve as instrument of disaster or as instrument of bliss. They are: the staff of Moses, the incense, and the Holy Ark. We have evidence that incense was instrumental in halting disaster from Numbers 17,12: “Aaron put on the incense in the midst of the congregation and made expiation for the people....until the plague was checked.” On the other hand, the same incense (even inside the Sanctuary) brought death upon Nadav and Avihu, the two older sons of Aaron (Leviticus 10,1). The Holy Ark became the cause of death of Uzza and the people of Beit Shemesh as we read in Samuel I 6,19, and it could be a source of blessing (Samuel II 6,11) to Oved Edom Hagitti as we read there: “and the Ark remained in the house of Oved-Edom the Gittite three months, and the Lord blessed Oved-Edom and his whole household.” The staff of Moses which consisted of a material known as sanpiryon, smote the river Nile, brought plagues on the Egyptians. But it also produced water from the rock at Refidim, renamed Massa u-merivah. Thus far the Midrash.
Rashi
Jether the Ishmaelite And in II Sam. (17:25) it says, “the Israelite.” He lived in the land of Ishmael, on the pattern of (ibid. 6:11): “the house of Obed Edom the Gittite,” and so, (I Ki. 7: 13f.): “And King Solomon sent and fetched Hiram out of Tyre. He (was) a widow’s son... and his father was a man of Tyre.”