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Okay so the Bible says in Genesis that God wanted to destroy the world and mankind with a flood. It also says that God then changed his mind and warned Noah about the flood. Was God going to always do this? If yes than why does bible say that God changed his mind? Did God then remember his promise to Adam and Eve to send a savior? Also think about it. Had God not changed his mind none of us would be here or could be saved and given eternal life. So we should thank God for that.
Noah foreshadows Christ.
Gen 5:29 - He named him Noah and said, "He will comfort us in the labor and painful toil of our hands caused by the ground the LORD has cursed.
Noah means "to comfort"
the "labor and painful toil of our hands caused by the ground the LORD has cursed" is the curse of man and man's inherited sin nature and the comfort or Noah is the salvation from this hardship. Noah here is an image of Christ. in Rom 5 Paul tells us
"For if the many died by the trespass of the one man, how much more did God’s grace and the gift that came by the grace of the one man" Through Adam man fell and the result was death, catastrophic death, but through Noah man was saved. Noah goes through the flood which is death and emerges new which is the resurrection. There is nothing random about this event and it is echoed throughout the Bible, in fact, death of the old [Adam] and resurrection into the new [Christ] is kind of the point of the entire thing.
Noah is the redeemer of the text and this is by design. look at 6:6
"The LORD regretted that he had made human beings on the earth, and his heart was deeply troubled." This word "regretted" is from the root "nacham" in hebrew and it litterally "to be sorry, to comfort oneself". Let's jump back to when Noah was born
"[Noah] will comfort us" is also is from the root nacham. Both are the same word with the exception of grammatical differences and tense. So we have this concept that Noah will give comfort and God comforting himself. God is not in a corner crying up in heaven, the text is deliberately showing a connection between Noah and God's comforting himself; Noah is this comfort.
There is a translation called the Mechanical translation (MT) that seeks to pull out the concrete meanings of the Hebrew language in the way ancient Hebrew is read. It's can be odd to read but in cases like this, it reveals these connections far clearer. After each name in square brackets, there is always its meaning which we often miss unless explicit stated in the text.
For example in the MT 5:29 is:
and he called out his title “No'ahh [Rest]” saying, this one will much comfort us from our work and from the hardship of our hands, from the ground which “YHWH [He exists]” much cursed
and 6:6-8 is:
6 and “YHWH [He exists]” was comforted given that he made the human in the land and he distressed himself to his heart
7 and “YHWH [He exists]” said, I will wipe away the human which I fattened from upon the face of the ground, from the human as well as the the beast as well as the treader and also the flyer of the sky given that I was comforted given that I made them,
8 and “No'ahh [Rest]” found beauty in the eyes of “YHWH [He exists]”,
The text is deliberately pulling in Noah as this comfort and rest needed for creation. God is not regretting as in changing his mind, he is making a way for salvation for man.