To put/place somebody on a pedestal
Definition 1 of 1
Pro Tip 1/3Emotional Impact
The phrase often implies that someone is admired without acknowledging their flaws. 
Fans sometimes put musicians on a pedestal, ignoring any controversies.
Pro Tip 2/3Unrealistic Expectations
Putting someone on a pedestal can lead to unrealistic expectations of them. 
She put her favorite teacher on a pedestal and was disappointed to see him fail.
Pro Tip 3/3Idiomatic Usage
This phrase is often used metaphorically to discuss a person's reputation or status. 
The company put the innovative CEO on a pedestal for his success.