The Doxology, also known as “Praise God, from Whom All Blessings Flow,” is actually the last verse of the hymn “Awake, My Soul, and with the Sun.” The words, which follow, were written by Thomas Ken, an Anglican bishop, in 1674.
Praise God, from Whom all blessings flow;
Praise Him, all creatures here below;
Praise Him above, ye heavenly host[s?];
Praise Father, Son, and Holy Ghost.
The music (links to a midi file) is attributed to Louis Bourgeois, a Calvinist who was jailed at least once for editing the Genevan Psalter during the mid-sixteenth century. More about the Doxology here, and I’ve uploaded the words and music here. There’s also a Hawaiian version that is sung to the same music as the English version.
n. pl. dox·ol·o·gies
An expression of praise to God, especially a short hymn sung as part of a Christian worship service.
[Medieval Latin doxologia, from Greek doxologi, “praise” : doxa, “glory, honor” (from dokein, “to seem”; see dek- in Indo-European roots) + -logi, -logy.]