Solomon and the assembly went to the high place at Gibeon because God’s tent of meeting was there. Solomon offered a large number of burnt offerings on the bronze altar at that location (2 Chronicles 1:3-6).
Solomon calls together a broad national leadership group and brings them to Gibeon for public worship. The text explains why Gibeon matters: the older “tent of meeting” made under Moses is there, along with the bronze altar associated with early wilderness worship. At the same time, the ark is not there; David had already moved it to Jerusalem. This scene functions as Solomon’s first major public act in 2 Chronicles, presenting him as a king who leads “all Israel” in an organized, national act.
This scene presents Solomon’s first major public act in Chronicles as a national act of worship. He gathers a wide leadership group (“all Israel” represented by commanders, judges, and clan heads) and leads them together to Gibeon (verses 2–3). The text treats this as an organized, public event rather than a private moment.
A careful answer keeps the immediate passage, the book's argument, and the whole-Bible storyline together, so the question is answered in context instead of as a detached idea.
Start with 2 Chronicles 1:3-6, then read the surrounding section so the answer stays connected to the passage's flow.
3So Solomon, and all the assembly with him, went to the high place that was at Gibeon; for there was the tent of meeting of God, which Moses the servant of Yahweh had made in the wilderness.
4But the ark of God had David brought up from Kiriath-jearim to [the place] that David had prepared for it; for he had pitched a tent for it at Jerusalem.
5Moreover the brazen altar, that Bezalel the son of Uri, the son of Hur, had made, was there before the tent of Yahweh: and Solomon and the assembly sought to it.
6Solomon went up there to the brazen altar before Yahweh, which was at the tent of meeting, and offered one thousand burnt offerings on it.