The Bible records that when the trumpeters and singers were unified in one voice, praising and thanking the Lord, exclaiming that He is good and that His mercy endures forever, the priests could not minister because the Lord’s glory had filled the house of the Lord (2 Chronicles 5:13-14).

What we can learn from this incident are many. Some of the salient lessons are as follows:
1. The people were unified in their praising and thanking God.
2. The people not only recognized the goodness of God, but they also confessed that He was indeed a merciful God, whose mercy had not bounds of time.
3. The priests were unable to minister anyone more because God’s glory descended in his House.

The application of these facts in our lives are as follows:
1. Are we unified with other believers in praising and thanking God?
2. Are we confessing God’s goodness and enduring mercy?
For when we do so, we can experience the glory of the Lord to descend upon us (his house/temple), so much so, that there wont be a need for the priests (pastors, missionaries, etc) who are in the ministry of reconciliation. In other words, we will be stopping priests, because the glory of the Lord in us would emanate his goodness and mercy to those seeking an answer for their lives.

2 Chronicles 5:13-14 (KJV)
13
It came even to pass, as the trumpeters and singers were as one, to make one sound to be heard in praising and thanking the LORD; and when they lifted up their voice with the trumpets and cymbals and instruments of musick, and praised the LORD, saying, For he is good; for his mercy endureth for ever: that then the house was filled with a cloud, even the house of the LORD;
14
So that the priests could not stand to minister by reason of the cloud: for the glory of the LORD had filled the house of God.