And the ark of God remained with the family of Obededom in his house three months. And the LORD blessed the house of Obededom, and all that he had. The Lord blessed the house of Obed-edom - That this man was only a sojourner at Gath, whence he was termed Gittite, and that he was originally a Levite, is evident from 1 Chronicles 15:17, 1 Chronicles 15:18.
The Targum ends this chapter thus: "And the Word of the Lord blessed Obed-edom, and his children, and his grand-children; and his wife conceived, and his eight daughters-in-law: and each brought forth eight at one birth, insomuch that in one day there were found, of fathers and children, fourscore and one; and He blessed and increased greatly all that belonged to him." This exposition will not be generally received; but all rabbins must be allowed to deal in the marvellous.
For other remarks see on 2 Samuel 6:1 (note), etc.
Commentary on the Bible, by Adam Clarke [1831].