This verse sets the scene for a significant event in the reign of King Jehoshaphat of Judah. Let's break it down:

"Jehoshaphat stood in the assembly of Judah and Jerusalem..." This establishes that King Jehoshaphat is in a public setting, addressing a large group of people representing the kingdom of Judah and its capital city, Jerusalem. He is taking a leadership role.

"...in Yahweh’s house..." This specifies the location as the Temple in Jerusalem. The Temple was the central place of worship for the Israelites/Judahites, dedicated to the God Yahweh. This highlights the religious significance of the event. Jehoshaphat is bringing this national crisis before God.

"...before the new court;" This pinpoints the exact location within the Temple as the "new court." While interpretations vary, this likely refers to a newly constructed or renovated courtyard within the Temple complex. This could have been a space intended for large public gatherings. The fact that it is "new" might suggest a sense of renewed dedication or a fresh start.

Overall Meaning

The verse paints a picture of King Jehoshaphat leading his people in a moment of crisis. By gathering in the Temple, specifically in the "new court," and addressing them publicly, Jehoshaphat is seeking divine guidance and support. The choice of location underscores the dependence of the kingdom on God in times of trouble. This is the preamble to Jehoshaphat's prayer and the Lord's response in the following verses. It shows the king as pious, responsible, and seeking divine intervention for his people.

In short, the verse emphasizes:

Leadership: Jehoshaphat's initiative in addressing the crisis.
Unity: The gathering of people from Judah and Jerusalem.
Faith: The reliance on God through prayer in the Temple.
Public Action: The open and transparent nature of Jehoshaphat's approach.