The concept you're referring to, where clocks at rest experience no passage of time, is a phenomenon known as time dilation, which is a consequence of the theory of relativity.
According to the theory of relativity, time dilation occurs due to the relative motion between observers. When an object is in motion relative to an observer, their respective experiences of time can differ. This means that if you are observing a moving object from your perspective, you will perceive time to be passing for that object.
However, it's important to note that the perception of time passing for a moving object does not contradict the fact that clocks at rest (relative to you) would experience time dilation. The discrepancy arises due to the relative nature of time and the fact that different observers can have different experiences of the passage of time.
From your perspective as an observer, you would perceive time as passing normally for the object in motion. Conversely, an observer traveling with the moving object would perceive time passing normally for themselves but might see time dilation effects for objects at rest relative to them.
In summary, the perception of time passing for moving objects from your perspective is a result of the relative nature of time and the phenomenon of time dilation predicted by the theory of relativity.