11 And it came to pass when the priests came out of the Most Holy Place (for all the priests who were present had sanctified themselves, without keeping to their divisions), 12 and the Levites who were the singers, all those of Asaph and Heman and Jeduthun, with their sons and their brethren, stood at the east end of the altar, clothed in white linen, having cymbals, stringed instruments and harps, and with them one hundred and twenty priests sounding with trumpets— 13 indeed it came to pass, when 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 music, and praised the LORD, saying:
“For He is good, For His mercy endures forever,”
that the house, the house of the LORD, was filled with a cloud, 14 so that the priests could not continue ministering because of the cloud; for the glory of the LORD filled the house of God. (II Chronicles 5:11-14)
"... for the glory of the Lord filled the house of God." No longer does God inhabit buildings made of wood, or steel, or concrete, or stones, or any other material that is used by men to make a place to dwell. The house of God is the assembly of His people, who gather in the name of His Son, the Lord Jesus Christ. Jesus said, "For where two or three are gathered together in My name, I am there in the midst of them." (Matthew 18:20). Such an assemblage is to be a Holy Convocation. It is not the singing, or the music playing that invites the presence of God to fill His house with glory, it is the brokenness and humility of a repentant people, and the thankfulness that they express for God's mercy to forgive and cleanse of every confessed transgression of His Law.
In too many places, loud music, with smoke and light shows, has replaced humility and repentance. It is as if the performance will invite the glory of God. Such performance is works, and will not add one microgram to the weight of God's glory that has been revealed to us through the atoning sacrifice of His Son upon the cross of Calvary.
On the other hand, a truly thankful people, who have been cleansed of their sin by the precious blood of the Lord Jesus Christ, will be so filled with praise and thanksgiving for their absolution, that they will want to worship their God with all their heart, mind, soul and strength. Such worship will be marked with instrument playing and passionate singing.
Oh Lord, teach me to walk in utter brokenness before You. Grant me the gift of tender conscience and perpetual repentance, that I may approach you with a thankful heart, ever ready to burst into instrument-accompanied song. May your House ever be filled with this kind of worship that you, and you alone, deserve. Amen!