Did you believe in heaven?

where is heaven?
have you seen heaven?
well the bible says you can only see heaven when you die doing good,

but if science and mathematics are asked, can there be heaven?
well they believe, but they do not call it heaven but they call it 4th dimension
because we have something called 1d, 2d, 3d. we humans are just 3dimension objects and everything we see around is 3 dimension as well as space is 3 dimension
and we are made to live in 3 dimension and we can not see the 4th dimension and it is possible that we can only really see when we are in the form of the 4th dimension and that is maybe our soul is in the 4th dimension

That's all and thank you very much