What is it then? I will pray with the spirit, and I will pray with the understanding also: I will sing with the spirit, and I will sing with the understanding also.
Let the word of Christ dwell in you richly; in all wisdom teaching and admonishing one another with psalms and hymns and spiritual songs, singing with grace in your hearts unto God.
And the four living creatures, having each one of them six wings, are full of eyes round about and within: and they have no rest day and night, saying, Holy, holy, holy, is the Lord God, the Almighty, who was and who is and who is to come.