Lyrics to First line of song God bless the Postman who brings mail Bless all cowboys out on trail etc?

The lyrics you are looking for are from the song "Tie Me Kangaroo Down, Sport". Here are the first few lines:

God bless the postman who brings the mail

Bless all cowboys out on the trail

Bless all them truckers who haul the freight

Keep it rolling, let it roll all the way