It seems that what most believers are waiting for is some kind of an official announcement that "the battle is now about to start, so get ready." They wait for the anti-Christ to appear and rule the world and the 666 mark to start being imposed--unaware that all these have started to happen already, though not full blast yet.
Here's what I mean. The anti-Christ is already operating in the halls of power in both secular governments and in churches worldwide. If you have spiritual eyes to see, you will easily see this. And the mark 666 is already in operation--though not literally. You see, 666 is man's number. God created man on the 6th day. So, it means man will rule in the last days--both in governments and in churches, and especially in churches. "They worship me in vain; their teachings are merely human rules," said Jesus, and that's what most churches have today--human theology, manuals, doctrines, and church policies using God's Word for it's own designs.
Instead of the Father, Son, and Holy Spirit in church, all you see today is man, man, and man. That's the "trinity" they honor in most churches today--man's theology, doctrines, traditions, ideas, efforts, and achievements. You don't see God anywhere the way He was present in the church in the bible, particularly in Jesus' ministry and in the Book of Acts.
In addition, my Jesus asked: "And why do you break the command of God for the sake of your tradition?" Most churches honor their church traditions more than God's Word. Clearly, the anti-Christ has started to rule. "This is the spirit of the antichrist, which you have heard is coming and even now is already in the world," says 1 John 4.
And about the mark 666? If you embrace the world's system in your church you have in effect received the mark in your forehead (religious mindset) and your hand (your religious deeds).
The spiritual battle has started, and you don't know it. When the literal anti-Christ and 666 marks appear, it would be too late then if you don't recognize the spiritual battle now and side with God 100 percent. By then, you would only find yourself siding with the anti-Christ and think you're siding with Jesus and persecuting the true church which you'd think is the false church.
So, side with Jesus now.