King

Psalm 47:2, 8
How awesome is the LORD the Most High, the great King over all the earth! . . .

Zechariah 14:9
On that day the LORD will become King over all the earth--the LORD alone, and His name alone.

Revelation 11:15
Then the seventh angel sounded his trumpet, and loud voices called out in heaven: "The kingdom of the world has become the kingdom of our Lord and of His Christ, and He will reign forever and ever."

sing

1 Corinthians 14:14, 15
For if I pray in a tongue, my spirit prays, but my mind is unfruitful. . . .

Colossians 3:16
Let the word of Christ richly dwell within you as you teach and admonish one another with all wisdom, and as you sing psalms, hymns, and spiritual songs with gratitude in your hearts to God.

with understanding.