Did God use the rainbow as a sign that He would never again destroy the world by flood?
Yep and if you read this carefully it does not say anyhing about a flood and it is speaking to people to draw near to the Lord .
People need to digest everything and not to judge or misread or twist things and they will receive their just reward .
When we receive a meseenger whether a drunk on the street or a pastor or friend or even a simple stranger God checks our humbleness and trueness of our heart for him not the messenger or the message !
It is all about Jesus nothing else matters !
Jeremiah 33:3
He’s not saying that the whole world will be covered by water. Only parts of it, in my reading of this. And we know that there are horrendous floods nowadays.