True, but why he would want to comfort us, is beyond my understanding. He's not God, he can't perform miracles.. And he isn't psychic, he cannot read our minds.
With all due respect, satan can read the mind of the unstable , those not solid in those matters of God and can perform lying signs and wonders. Scripture is pretty clear on that. What is also true , he can try and pursuade a believer he is "God" giving answer. He does after all appear as an angel of light. That is why I say again, judgement must be reserved until the facts are known concerning motive.
So , now lets probe since Devin is not saying. Hypothetically speaking- let's say Devin is upset about something someone or others have done against his faith, would God reveal him as a goat or would God be saying someone /they- are the goat or goats? Now, if Devin has been acting contrary to Christian living would God be saying he is a goat? More complicated yet, if Devin is a backslider like what happens to many Christians over time, would God who knows his end -calls him a goat? He then is not predestined and elected as saved and will NOT continue to run his race and win? Lastly, if God said he is a goat, then he is lost forever, and can not be saved for we know in scripture sheep and goats are very different. Is God saying give up don't bother, once a goat always a goat-predestined to fail and never purposed for glory? God would never call a fallen believer a goat if He knows they are going to get back up and run their race and win. A goat is a completely lost soul like a weed.
A stumbling Christian is like St.Paul, and even Peter or doubting Thomas never a goat or weed simply weak and incomplete. But fashioned from the foundation of the world to be purposed for and in Christ and made complete.
Again, the context of the sorrow can only be revealed by Devin.