Grammar help with this prayer

「天にまします我らが神よ、願わくば御名を崇めさせ給え」
「この地に遣わし給うた天の申し子よ、その力漲らせ天に浮かばせ給え」
「我らに日用の糧を今日も与え給え」

This is from a game I'm currently playing.
I'm interested in the highlighted parts. I'm don't know almost any classical Japanese, so I don't know if those verb forms 崇めさせ(る), 漲らせ(る), 浮かばせ(る) are just the standard causative form or something else from classical Japanese? If it is causative, do those verbs then simply mean "let..." and the person giving the permission would be 神 and 申し子?

Also, what form is 給うた? Classical past form?

Thanks.

The first and the third are from Pater Noster.
Wikipedia shows the Latin version, English version and Japanese version so you can compare.
主の祈り - Wikipedia

崇める＋させる＋給う
給え is imperative form of 給う（たまう, can be written 賜う) , which is polite form of 与える、くれる (to give).
So those sentences mean "please let/make xxx [verb]" if literally translated. You can more simply put them as "please".

I hope someone will give you better explanation on grammar...

As undrentide-san explained, you can think ～（さ）せ給え is a classical version of polite request for permission ～（さ）せてください. ください(imperative of くださる) is a polite/an honorific form of くれ(imperative of くれる) here.
As for 漲らせ in the second line, it's not a request for permission, but just a request, since その力 can't refer to the speaker's power. The speaker is asking 天の申し子 for その力を漲らせる. (cf. intransitive 力が漲る vs transitive 力を漲らせる).

The u-euphonic change occurs on the past form of some verbs also in standard Japanese as same as Kansai dialect.
e.g.
給う[たまう] --> 給うた[たもうた] (not たまった)
問う --> 問うた(not 問った)

Thank you for the help.
I'm still a bit unclear about the 漲らせ part.
A bit of context so the rest of the line makes sense - the people praying are living in a city that floats in the sky, so the [天に浮かばせ給え] part would mean "let us float in the sky".

Toritoribe said:

The speaker is asking 天の申し子 for その力を漲らせる.

Click to expand...

This would then mean "make/cause (your) power/strength to overflow" ? (it's a bit tricky to translate it literally) I'm just wondering if this is not a really a request, but just "漲らせて、。。。" meaning "make/cause, and...".
Unless I'm missing something and causative in 連用形 can be used as a request?

Also, the 漲らせる = transitive is an interesting observation, I didn't think of that.

As I wrote, it's just a request "please float the island/us in the air", not asking permission "let us float in the air". The agent of 漲らせる/浮かばせる is 天の申し子, not us. 浮かばせる works more likely as a transitive verb (as same as 浮かべる) here, rather than causative.

漲らせ is the continuous usage of the -masu stem. 漲らせて has the same function, but the -masu stem sounds more formal/classical.

その力漲らせ天に浮かばせ給え ＝ その力漲らせて天に浮かばせ給え ＝ その力漲らせ給え and 天に浮かばせ給え
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