Song of the Sky Loom

Question

what does Pueblo Indian ask for in this prayer poem Song of the Sky Loom?

Answer 1

The Tewa "Song of The Sky of The Loom" is a form of a supplication prayer that uses an apostrophe "Oh" to addresses the personified   deities of nature: "Mother Earth" and "Father Sky." The supplicants who call themselves "the children" ask for "a garment of brightness" as a reward for bringing "with tired backs" the gifts the deities love. The garment's description is structured as an extended metaphysical conceit that compares the physical parts of the garment as warp, weft, fringes, and border to natural phenomena:  red light of evening, the falling rain, and the standing rainbow. The personification of the sky as a loom that weaves the garment, not from a physical thread, but light and water, as well as the expressed desire to exchange the physical material to a spiritual one in order to "walk fittingly where birds sing, [...]where grass is green" can be interpreted as a final exchange of mortality to immortality, the physical to the spiritual. 

Terminology used :

supplication:  to make a humble entreaty, especially: to pray to God

"Supplicate." Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/supplicate. Accessed 5 Oct. 2021.

apostrophe: the addressing of a usually absent person or a usually personified thing rhetorically: Carlyle's "O Liberty, what things are done in thy name!" is an example of apostrophe.

"Apostrophe." Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/apostrophe. Accessed 5 Oct. 2021.

personification:: attribution of personal qualities, especially: representation of a thing or abstraction as a person or by the human form

2: a divinity or imaginary being representing a thing or abstraction

From Merriam Webster: The Art of Personification

It was long common in the visual arts to use human figures to represent a range of natural phenomena, personal qualities, abstract conceptions, etc. The Greeks and Romans showed us how. Many of their gods and goddesses themselves represented a single thing, be it dawn (Eos, Aurora), wisdom (Athena, Minerva), or war (Ares, Mars); when depicted in idealized human form (as, say, a stately woman holding a scales), each became a personification of that phenomenon or quality or concept (in this case, Justice). Inspired by classical art, Renaissance painters and sculptors likewise began producing thousands of artistic personifications--of Time, or Folly, or France, or Vice, or Poetry, or the Americas. And in the 18th century English-speakers began using the word itself. Today artists are less inclined to such depictions, and the word gets used more often to describe actual individuals; when we call someone the personification of style, or greed, or loyalty, we mean the ideal or epitome or embodiment of that quality.  

"Personification." Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/personification. Accessed 5 Oct. 2021.

metaphysical: Derived from the Greek meta ta physika ("after the things of nature"); referring to an idea, doctrine, or posited reality outside of human sense perception. 

extended metaphysical metaphor or conceit: As a literary device, a conceit uses an extended metaphor that compares two very dissimilar things. A conceit is often elaborate and controls a large section of a poem or the entire poem. Conceits are often quite unique and ingenious and can present striking juxtaposition and comparison of the unlike things.

Answer 2

The Tewa believed Mother Nature controlled the elements, so it seems to me that the poem is an lengthy appeal to be magnanimous. I would cite text examples to support that.