We have been learning how God has been dealing with His chosen people in Isaiah's time. We are God's chosen people today, and He deals with us in a similar way. When God deals with us, God is trying to develop our perspective on Him and on what's right and wrong in His eyes. Moreover, God is also trying to give us our perspective. In these verses, Isaiah reiterates the creation account (Genesis ch. 1) to address a people who forgot God, and whose perspective needs to be recalibrated and kept. God wants us to remember Him and keep the right perspective of Him, because in doing so, we will have the strength and internal renewal needed to live on this earth, and live in favor with God.