1 Kings 3:4
And the king went to Gibeon to sacrifice there; for that was the great high place: a thousand burnt offerings did Solomon offer upon that altar. And the king went to Gibeon to sacrifice there; for that was the great high place: a thousand burnt offerings did Solomon offer upon that altar.
The king went to Gibeon to sacrifice there because that was the great high place, and he offered a thousand burnt offerings upon that altar. This took place early in his reign, while he still loved the Lord and walked uprightly in strict obedience to God's commands and in the statutes of David his father. At that time the people sacrificed in high places because no house had yet been built for the name of the Lord, and Solomon also sacrificed and burned incense in high places. Gibeon was significant because the tabernacle built in the wilderness with its bronze altar was still there, while the ark had been brought to Jerusalem.
Solomon did not go alone but went with his counselors of state and united with them in offering sacrifices to God and in full consecration to the Lord's service, including the captains of thousands and of hundreds, the judges, and every governor and chief of the fathers. The offerings were not mere formal ceremony but a sincere act of reconsecration, showing that Solomon comprehended the magnitude of the duties of the kingly office. He knew that those bearing heavy burdens must seek wisdom, guidance, help and acceptance from the Source of wisdom in order to fulfill their responsibilities acceptably, and he wanted to encourage his counselors to unite with him heartily in this and in making sure of their acceptance with God. After this offering at Gibeon, the Lord appeared to Solomon in a dream by night and told him to ask what should be given to him.