You may rely upon it.
You may rely upon it that he will be punctual.
You may rely upon it that he will be early .
You can rely upon it that it will rain this weekend.
You may rely upon it they will come and join you.
Never reverse flow through a regulator or rely upon it to act as a check valve. It will not perform this function.
"He is in safe custody," answered Villefort; "and rely upon it, if the letter is found, he will not be likely to be trusted abroad again, unless he goes forth under the especial protection of the headsman."