Yes he knows, but we have freewill, and a choice to make.
Is it possible to make a decision/choice that God doesn’t already know the result to?
The myth of “freewill” gives us power over God. Power that we simply do not have.
Man is fallen from the day he is born and is spiritually dead in his sins. Dead men cannot “choose” life. God, in his sovereign will, moves in our hearts and gives us the faith to call upon him. Apart from him, we can do nothing on our own.
http://www.fivesolas.com/tulipscriptures.htm
We are chosen. We do not “choose” on our own. Just as Lazarus couldn’t raise himself from the dead, nor can we who are spiritually dead choose Christ without God acting in our hearts first.
Regarding the “end-times”. Jenkins and LaHaye have made a million dollars on Tribulation fiction. Don’t buy into it. Christ will return at a time of his own choosing, and nothing we can do will delay it or hasten it. There is one spiritual resurrection (at our death), and one physical resurrection (when Christ returns). There is no “tribulation” period.
http://reformedonline.com/view/reformedonline/rapture.htm
Some reading to guide you.
Blessings,
IOTN