כָּל־אֵ֜לֶּה אֲבָנִ֤ים יְקָרֹת֙ כְּמִדֹּ֣ת גָּזִ֔ית מְגֹרָר֥וֹת בַּמְּגֵרָ֖ה מִבַּ֣יִת וּמִח֑וּץ וּמִמַּסָּד֙ עַד־הַטְּפָח֔וֹת וּמִח֖וּץ עַד־הֶחָצֵ֥ר הַגְּדוֹלָֽה׃
Tutte queste erano pietre pregiate, secondo le misure delle pietre squadrate, segate con la sega di dentro e di fuori, dalle fondamenta fino all'appoggio delle travi, e all'esterno fino al grande cortile.
Rabbeinu Bahya
ואלה בני דישן, “these are the sons of Dishan, etc.” This is the same Dishan mentioned earlier in verse 21, the fifth son of Seir HaChori. Sometimes the Torah spells his name דישון; other times it spells the name דישן. It is the same person each time. We find such differences in the spelling of the names of one and the same person elsewhere, such as in Kings where Chirom is sometimes spelled חירם other times חירום (compare Kings I 7,9). This principle applies only when these names appear in different verses. When both spellings appear in the same verse, however, it is clear that two different people of similar names are meant. The spelling is changed so that we become aware that the Torah refers two separate people.