What the Bible says about Moses' intercession
(From Forerunner Commentary)
Can a weak and mortal man or woman influence God? Can we change His mind? Is it wrong to reason with Him? Contrary to many people's first reaction, God actually urges, "Come now, and let us reason together." Abraham reasoned with God concerning the city of Sodom, and as a result, God promised He would not destroy it if there were only ten righteous people there. Moses reasoned with God concerning the rebellious Israelites. God wanted to destroy them for their idolatry but changed His mind because of Moses' intercession.
Reasoning with God does not mean arguing with Him or making excuses for ourselves or our actions. Nor does it mean trying to get God to change His laws. Reasoning with Him means giving Him reasons for why we ask what we do.
Martin G. Collins
Reasoning With God