Jeremy, you said, «There are several examples of this in Scripture, some of which will be looked at in the next chapter, but for now, we might see evidence of this sort of withdrawal of God's protective hand in the words of Jesus in Matthew 23:37.» (redeeminggod.com)
Absolutely there is a vision of God's protective hand over those where the blood is present, prefiguring the atoning substitutionary death of Christ, but there seems to be a clear indication that in this event (as in the ultimate culmination of judgement) it is God who is striking down the first born of the Egyptians, rather than God being an observer to an event outside of His control. (redeeminggod.com)
But if that is true, if the flood was a natural consequence of human rebellion and sinfulness so that humanity separated themselves from God's protective hand thus inviting destruction upon their own heads, then how is it that in Genesis 8:21, God can now promise to stop the same sort of destruction in the future? (redeeminggod.com)