Matthew Poole and continuators on 2 Chronicles 1:6

6 And Solomon went up thither to the brazen altar before the LORD, which was at the tabernacle of the congregation, and offered a thousand burnt-offerings upon it.

i. e. Which Altar. But that he had now said v. 5. and therefore would not unnecessarily repeat it. Or rather, who: and so these Words are emphatical, and contain a Reason why Solomon went thither, because the Lord was there graciously present to hear Prayers and receive Sacrifices.