At the conclusion of the leadership assembly, the king calls upon the gathered crowd to unite in giving thanks and submitting before God. This request serves as a direct continuation of the gathering's opening, where David first brought all the leaders of Israel together [רש״י]. He now turns to the people and asks them to actively praise and glorify God [מצודת ציון].
A meaningful difference appears between the way the king speaks and how the people respond. When David addresses the crowd, he refers to God as belonging directly to them. By doing so, he emphasizes that the merit for this entire event belongs entirely to the people. He conveys that God dwells among them based on their own worth [מלבי״ם], intentionally omitting any mention of their ancestors [רש״י].
The crowd, however, reacts with a different focus. When they answer the king's call, they direct their blessing to the God of their ancestors. Driven by deep humility, the people attribute their spiritual standing to the founders of the nation rather than to their own achievements [מלבי״ם]. Their response weaves together the recognition of God as both their personal God and the God of their forefathers. They express this with an awareness of divine holiness, using pleasant and soothing words [רש״י]. Following this heartfelt blessing, the people physically show their submission by bending their heads [מצודת ציון] and bowing down before both God and the king.