Could you please post those verses in Acts and Revelation?
What you say is exactly what everyone else says about their Savior, that it will be visible and will happen of a sudden with no way of determing the authenticity of the Savior. This goes against logic and against the Law of determing God's proof on earth. There has to be a form of knowing, which has been previously laid down by the Prophets and Messengers.
The most important one being calling to God, or the Supremacy of God. For example, if you and I are waiting for Jesus, what good would it be if you or I were to take part in elections? It would go against our beliefs.