You have seriously confused His will from His plan.
Rather, it is you who has seriously confusing His directive will for man to follow,, with His will in accomplishing His plan.
In which while God's directive will for man to obey Him, yet it is God's will that man have the ability to make choices, and have alternatives to choose btwn, and ultimately btwn Him and the opposite, and thereby to effect and realize consequences (which to varying degrees and scopes, affect others), and with all of which accomplishing God's will, His plan, revealing what souls really want.
All of which He can do as knowing all that there is to know, not just in this speck of the universe and in time, but for eternity.
Give us this day...