That same day the king consecrated the central area of the courtyard in front of the Lord’s Temple. He offered burnt offerings, grain offerings, and the fat of peace offerings there, because the bronze altar in the Lord’s presence was too small to hold all the burnt offerings, grain offerings, and the fat of the peace offerings.
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The middle of the court—or, "the whole area of the court"—refers to the entire "mid" space within the enclosing walls. This area thus became…

The same day did the king hallow the middle of the court that
was before the house of the Lord

Solomon offered a great sacrifice. He kept the feast of tabernacles, as it seems, after the feast of dedication. Thus should we go home, rejoicing,…
Albert Barnes
AlbertBarnes