For God, who commanded the light to shine out of darkness, hath shined in our hearts, to give the light of the knowledge of the glory of God in the face of Jesus Christ. It is indisputable that: 1. Paul is directly making an analogy with Genesis 1:2-3 which is indisputably the effectual call of light out of darkness. God spoke light into existence - that is an effectual call. 2. Paul directly makes it analogous with how "the light of the knowlege of the glory of God in the face of Jesus Christ" came into existence "in our hearts". He is indisputably claiming this light was called into existence in the heart, just as light was called into existence in the darkened world - an effectual call. 3. Paul's immediate context makes this analogy stronger by the fact that he has just described the unregenerate state of the heart as being in a state of DARKNESS (vv. 2-3) and it is that STATE OF DARKNESS that this analogy is called upon to describe how light REPLACES darkness and only the unregenerated state is in darkness as previously stated. 4. The spoken word that calls into existence this metaphorical light of knowledge in the darkened heart is the gospel, however, it is not the gospel has empowered by the preacher as verse 7 clearly denies that the power to do that rests in the preacher or his preaching. This is exactly stated to the Thessalonicans in 1 Thes.1:5 because when only man speaks the gospel it comes "in word only" but when God speaks the gospel it comes in power, in the HOly Spirit and in much assurance. 5. Furthermore this transaction occurs IN OUR HEARTS and NO MAN by NO human WORDS can work in that domain. Moreover, he does not say POTENTIAL light is available to remove the darkness, but light is spoken into existence that does remove the darkness.