Colossians 3:16
You should let the message of Christ live in you abundantly [i.e., as individuals and collectively]. Use [much] wisdom in teaching and warning one another with psalms, hymns and spiritual songs, singing with favor [i.e., with thankfulness] in your hearts toward God.
1 Corinthians 14:14-15
For if I pray in a language [supernaturally], [it is] my spirit that is praying, but my mind does not understand [what I am saying]. [Note: Here Paul raises an objection to the use of a language without the person knowing what he is saying].
Revelation 11:15
Then the seventh angel sounded its trumpet, and there were loud voices in heaven saying, "The kingdom of the world has become the kingdom of our Lord [i.e., God] and of His Christ, and He will rule forever and ever."