You, God, were talking to one of your best angels, because he wanted to end the life on earth once for all (so just Adam because you didn't create anyone else yet.) But you would never do such things.

Archaengel: "he already bought us troubles, why keep him?!"

You: "because he is another soul. Just like you. So he deserves to live."

Archaengel: "he's just another human! He's not pure like us!"

In while, Adam was listening all of this conversation.