How was ?time? created?

In various posts by the members the Big Bang is discussed as being the origin of time- in other words they say that both time and the universe originated (were created) as a part of the Big Bang. This potentially refers to time as an object with some material substance that may be susceptible to compressing, stretching, twisting and bending, to mention just a few possibilities. This appears fanciful to me.
A brief response that Einstein?s theories offer this conclusion will be insufficient as a real life explanation for me.
jjw