Let me tell you spoken
Used to emphasize what you're saying
But let me tell you, Nick is a great asset to the company.
He's the type of person who would give the shirt of his back if he thought it would help, let me tell you.
Let me tell you, her solo performance on the flute was very impressive.
White lie
To make someone learn something by repeating it many times
To make someone understand how serious, difficult, or dangerous something is
Used when you want to tell someone something even if it can make you embarrassed or depict you unfavorably
To be told about something