God looked to create a great many children to share His Kingdom and serve Him as priests. It would mean creating such a people as a new creation starting with children of Satan who lie and murderously hate and creating them anew into children of His own who lovingly obey Him and behave like Him. So He needed a template from which to make copies but it had to be a template that was right and true and the plumbline God uses is perfect at measuring what is right and a proper right angle to the ground when it has to point exactly upwards as in a well built building. So the template has to be as good as the standards God is applying and conform perfectly to those standards or else the outcomes of copying children as building blocks based on this template will be imperfect from the start and get worse as more copies are made from the copies. Well He chose His Son from all time to be the template and sent Him into the world to start His Kingdom and they called His name Jesus, The Christ.
