"Look here, you’ve often called on me before"

Privates On ParadeCaptain Dennis!  A word in your ear!
Why soldiers generally refrain
From taking Jesus name in vain
One day you’ll need to call him in the clamour of a war
And he would say "Look here, you’ve often called on me before"
"I’m an extremely busy bloke."
"You shouldn’t use my name in joke."

Quotation from the end credits, Privates On Parade, John Cleese as Major Giles Flack.