"One thing have I desired of Yahweh," sings David, “That I may dwell in the house of Yahweh all the days of my life, to behold the beauty of Yahweh, and to inquire in his temple.”
Sounds like three things to me. Then again, this is the Bible we’re talking about, and it has a way of doing things with ones and threes.
David wants to dwell in the house of Yahweh; houses are built by fathers for sons.
David wants to behold the beauty of Yahweh; John later writes to us of what we have seen with our eyes, which we have looked upon.
David wants to inquire in his temple; the Spirit searches all things, the deep things of God.
One thing, and three things, David wants of Yahweh, all of which are God himself.