2 Chronicles 29:27-30 And Hezekiah commanded to offer the burnt offering upon the altar. And when the burnt offering began, the song of the Lord began also with the trumpets and with the instruments ordained by David king of Israel. And all the congregation worshipped, and the singers sang, and the trumpeters sounded: and all this continued until the burnt offering was finished. And when they had made an end of offering, the king and all that were with him bowed themselves, and worshipped. Moreover Hezekiah the king and the princes commanded the Levites to sing praise unto the Lord with the words of David, and of Asaph the seer. And they sang praises with gladness, and they bowed their heads and worshipped.
This must have been quite an event when Hezekiah restored temple worship and offered sacrifices. He and the people celebrated raucously by singing psalms, hymns, and spiritual songs, bowing their heads and worshipping, while musical instruments sounded loudly. True worship and exuberant song is the natural response to the sacrifices that restore a right relationship with God.
Singing and making melody in the heart is the natural response of the believer to the hearing of the gospel and being reminded of the once-for-all sacrifice of Jesus for us. Every time we remember the Gospel our heart erupts in jubilant song, whether it is heard aloud or not. The often rehearsing of the gospel produces a joy-filled life, full of thanks, praise, worship, and song. Every day can be jubilation and celebration.