The statement, "Wake up" implies that the fellow being spoken to had been sleeping. Sleeping at the wrong time can be very dangerous while sleeping spiritually is even more dangerous!. In 1 Samuel 26:4-16, we learnt that King Saul slept. He was surrounded by mighty men of Israel not ordinary soldiers, but the best in the land, and they all slept too. While they were sleeping, David (the man they were seeking to kill) and his men came and took the sword of the king as well as his water bottle. Abishai, one of Davids men said to him, Let me smite him just once – not twice, just once and he will be dead. When you are sleeping, no matter how strong you are, you would be helpless and open to the attack of the enemy. That is why you must never sleep spiritually.

Be sober, be vigilant; because your adversary the devil, as a roaring lion, walketh about, seeking whom he may devour:
1 Peter 5:8

The above passage says that the devil is walking around, and his only mission is to look for people that he can devour. If he gets to you and finds you sleeping spiritually, just one stroke from him can kill you.

As strong as Saul’s bodyguards were, the moment he slept, they slept too. When you sleep spiritually, you disconnect your protective covering in the spirit. The moment you stop fasting, stop praying, stop studying your Bible and you now begin to dip your hands into one little sin or the other, the protective covering that God had put over you and your family members begins to weaken, giving a chance for the enemy to attack successfully. In Numbers 22:1-41, Balaam tried to curse the Israelites but could only bless them because of the protective covering that God had put over them. That covering was however, lifted when the people of Israel began to sleep spiritually. This led to a plague killing twenty-four thousands of them. Many Christians are suffering from the oppression of the devil today because they are sleeping spiritually. Where they should be victors, they are victims. WAKE UP!

Start praying again! Start evangelising again! Run away from those little sins! Stop being a prey to the devil! WAKE UP!
Written by Pastor E.A. Adeboye.

Was God asleep when Satan appeared before Him unexpectedly. God had to ask Satan in verse 7 “From where do you come?” . What we should ask God for is wisdom to dribble Satan to lost his way from us whenever he tries to come our way.

6 Now there was a day when the sons of God came to present themselves before the Lord, and Satan also came among them.
7 And the Lord said to Satan, “From where do you come?”

MindHacker9009:

7 And the Lord said to Satan, “From where do you come?”

That question doesn't mean God didn't know where he'd come from.

The same way it didn't mean God didn't know what Cain had done to Abel when He asked, "Where is your brother?"

PastorMIsBack:

That question doesn't mean God didn't know where he'd come from.

So God knew Satan was coming to present himself before Him after Satan had been cast out of Heaven and God did not stop Satan from doing so, umm!