The Rapture: who's going up with Christ at his coming?

Many of us Christians think that being caught up with our Saviour Jesus Christ when He returns for His saints (the Rapture) depends on our ability to keep the Ten Commandments, "how good we are" here on earth or even what we are doing at the time of His coming. Not so! Just a quick intro before we see why not and what the word of the Lord says is the condition for being caught up with Christ