Nope, according to many verses in scripture God does not change his mind for anyone, simply because he is omniscient and sees/knows the future.
James 1:17
"Every good endowment and every perfect gift is from above, coming down from the Father of lights with whom there is no variation or shadow due to change."
This... "God changes His mind for our sake" looks like a crude made up story to justify the differences between the God of OT, versus Jesus and the same God of NT..
Again a big NO.. Has heaven and earth passed away? No, therefore according to Jesus nothing has been changed, let alone abrogated.
"Think not that I have come to abolish the law and the prophets..."
It seems to me that you... don't want to understand anything.