come hell or high water

In reference to the dangers of hell and stormy seas or floods.

• "The pioneers were determined to build a community in the wilderness come hell or high water."
• "Her crew knew that deep in her heart beat engines fit and able to push her blunt old nose ahead at a sweet fourteen knots, come Hell or high water."

• come what may
• rain or shine
• no matter what

• Lord willing and the creek don't rise