I agree with Guest's suggestion for changing the spelling. "Gos" and "raine" are either typos or non-standard spellings to try to reflect a particular pronunciation. Gus and ràinig are the correct spellings.

In the last verse, "Thì" should be Thu. I'm surprised the formal "Sibh" isn't used when addressing the creator, but I found other examples:

http://argyll.anglican.org/resources/spiritualworship-resources/gaelic/gaelic-in-the-sec-liturgy/gaelic-1982-eucharist/
Chruthaich thu na nèamhan agus steidhich thu an talamh; tha thu a’ cumail ann am bith gach nì a tha ann. =
You created the heavens and established the earth; you sustain in being all that is.

'Uain Dhe, a tha a’ toirt air falbh peacannan an t-saoghail= Lamb of God who takes away the sins of the world.