I was going to bet my life that they were real.
"You can bet your life the first man through will be shot."
He had bet his life before, many times, but this was different.
But he'd bet his life that she was true to him.
I bet my life on it right there and then.
But was he willing to bet her life on his control?
In a world of lies, he was getting ready to bet his life on the truth.
He was, in fact, betting his life on the idea.
"Sure enough to bet my life on not following it," she said.
They were telling the truth, he'd bet his life on it.