창세기 19:21의 주석

גם לדבר הזה CONCERNING THIS THING ALSO — Not only will you be saved, but I will also save the whole city for Your sake.

ויאמר אליו הנה נשאתי פניך, from this verse we may deduce that when G’d dispatches an angel on a major mission, He gives the angel some discretion in the manner in which he is to carry out the task assigned to him. The angel or angels may use their own intelligence in this respect. Clearly, an angel is not like a golem, but is an intelligent being.

Also … regarding this. Hashem agreed not to overturn Zoar at all.

I overturn... I.e., we should not mistakenly explain it as, “It overturns me,” since that too is a possible meaning when one speaks about another. But that meaning is not appropriate here. (R. Meir Stern)

גם לדבר הזה, “also to this request.” This is the angel speaking after Lot reminded him that it was his task to save him. [Lot speaking: “In addition to the mere fact that you have the task to save me, I ask you to delay destruction of Tzoar until I can reach higher ground.”]

הפכי means I OVERTHROW, just as (48:5) “until I come (בואי) , and (16:13) “after I have seen (רואי)” and (Jeremiah 31:19) “whenever I speak (דברי) of him)”.