While we study the Book of Exodus we need focus of the key word which is glory of God. Genesis dealt with glory of God giving the earth a recognizable form. Adam, Noah and the patriarchs were such shapes on which glory of God worked. His blessing Abraham was with a proviso that the Promised Land would be realized only in His time. Unlike the open ended Time it would begin only when ‘the iniquity of the Amorites was full (Ge.15:16). So the patriarchs lived and died in faith.
It is faith that made God and his glory hold together into which the nation of Israel would take their first steps. This is how we need understand the journey of the children of Israel. “…God let them not through the way of the Philistines, although that was near…( Ex.13. 17)”. God had respect unto their sufferings and would spare them from alarms and needless toil. Like a mother hen walking her brood closely God sent pillars of fire and cloud to lead them their way. Thus in the present study we are examining what would glory of God in man or a nation would entail. Firstborn is a sign of such cloud of glory about the nation. Under the New Testament this is what indwelling experience would mean to us.
In the book of Genesis while we studied the creation account (1:3) we were given a picture of how God cast his glory to which we have the verse illustrating the act of faith, “Cast your bread upon the waters: for thou shalt find it after many days.’Give portion to seven…(Eccl.11:1-2).” Creative faith of God sent his glory to the earth that was been down and without form. For all the creation Adam was the steward, created in the image of God. The Spirit introduces him as the son and as antitype to Jesus Christ whose coming is signified by the number Seven. The changeability of the earth would require such a help from the godhead; and evil like the tares are not from God but in the manner sin of disobedience created conditions for it to settle down. What does St Paul say about it? “…Where Sin abounded grace did abound much more..(Ro.5:20,19). The Book of Genesis as treated by the Holy Spirit gave rise to the nation of Israel of whom God the Father speaks as the firstborn. It was how He commands Moses to inform Pharaoh.”Let my son go, that he may serve me…(Ex.4:23,22)” Where man lost by disobedience of Adam, the glory of God as exemplified by man must be made manifest by a nation. A nation has its borders and it must be like light set on a candlestick than under a bushel. Nation of Israel thus was set apart for God’s mercy and the blessings.