Mark 13:4
This is the beginning of perhaps one of the most difficult passages in all of the Gospels. Jesus will, in answer to their question, give them a discourse upon the coming history of the world. It is very important, then, to understand his words carefully. Rushing into this is very unwise. The Word of God is meant to be studied, not just to be read through.
The verse here does not give us the entire question that was asked. However, we do see these four men come to Christ to ask. So each of them likely added their own ideas to the question. Doubtless, they knew they were asking a big question, and they hoped for a big answer. They wanted to ask it right.
Heavenly Father, thank you for answering our questions. Though there is much we do not know, you have revealed so very much. Thank you! Your knowledge is glorious! In the name of the Lord Jesus Christ I pray and praise you, Amen.