Some Ans. Questions 2014 by -'Abdu'l-Bahá- 1 Para

Essential pre-existence is an existence which is not preceded by a cause; essential origination is preceded by a cause. Temporal pre-existence has no beginning; temporal origination has both a beginning and an end. For the existence of each and every thing depends upon four causes: the efficient cause, the material cause, the formal cause, and the final cause.[156] So this chair has a creator who is a carpenter, a matter which is wood, a form which is that of a chair, and a purpose which is to serve as a seat. Therefore, this chair is essentially originated, for it is preceded by, and its existence is conditioned upon, a cause. This is called essential or intrinsic origination. (80:3) com1

End of Quote

  Some Ans. Questions 2014
  Citation Source List
: see