where does time come from?

There is no such thing as time and there is no such thing as space.  It is called spacetime - one word for one thing.  Spacetime comes from gravity and gravity comes from mass.  Spacetime is exactly the same as universe.  The universe gets larger as mass moves outward.  That's why the universe is finite and not infinite.

There is no time. It's a created concept just like religion. People try to explain time by creating a clock. By the same token, people try to explain religion by having faith. 

The measurement of time began with the invention of sundials in ancient Egypt some time prior to 1500 B.C. However, the time the Egyptians measured was not the same as the time today's clocks measure. For the Egyptians, and indeed for a further three millennia, the basic unit of time was the period of daylight.

And yet 'gravity' is derived from time displacement from massive objects is just as intriguing. Someone will discover the root in years to come, perhaps with quantum computing or theoretical physics.

Where does it come from, Cotton-Eyed Joe?

A very good question and one scholars have so far only been able to come up with circular arguments to describe. As you have posed the question in a science forum and physics is the science that deals with time physicists tell us time is what the clock says. It is difficult to know if time exists independent of human beings.

In one sense it does. Some make facile arguments such as nothing existed until humans saw it. That is an argument of sheer arrogance. Of course, things existed prior to the volution of humans and we also measure the periods before our existence. However, whether we alone are conscience of time is another question.

Time is an illusion. But it's a very convincing one.

it comes from god