“Suppose” happens when the mind imagines what a thing should do or be. For example:

Original Meaning Tagalog
Let’s suppose that the shipment is delayed.. Let’s imagine that the shipment is delayed.. Sabihin natin na made-delay ang shipment..
He was supposed to arrive by now I thought (imagined or expected) that he should be here by now Dapat ay nakarating na siya ngayon
Creation supposes a Creator We imagine a Creator as the cause of Creation Ang mga nilalang ay dapat may manlilikha