God made Things from things that are not seen?

Well God didn't make things from what are not seen, i dint think. i believe He just simply made it. like a tree, He didn't throw a bunch of invisible things into a pot and boom a tree popped out. yet He just made it. i know its hard to understand, i mean i don't understand it but The Bible says our minds can not comprehend what God does or has done. Just like we cannot understand how God has always been there. the Bible says God is, has always been, and always will be. i don't understand how He was always there but faith defiantly helps me.