What does it mean when it says that God is a spirit and we must worship him in spirit?

How many times does "water" occur in the Bible and what is it's significance?

The Bible states that God "predestines" Christians for a future with Christ in Heaven and that he does NOT predestine others to Hell; however, does this mean that only a few of the Christians on Earth were predestined by God and the rest "happened" to come to Christ by the work of these Christians and the Holy Spirit? Or were ALL the people who God knew would become Christian through His omniscience thus "predestined" by Christ?

When a man dies, where does the spirit go? If the "spirit" of man is the one that gives the believer the knowledge of God, then does the "spirit" of an unbelieving man have knowledge of God?

Please define and explain the characteristics of the soul and the spirit of man.

What does this verse mean? How is fornication considered sinning against the body? What is included in the term "fornication"?

Are we supposed to be able to get to a point to where we never sin?

How can anyone be saved before the saving work of our Lord Jesus Christ? If even one person could be saved without his blood, then does that mean that the Father is evil, putting his son to useless suffering, for if He can save one can He not save them all the same way?

We have heard much about the judgment of believers in the age of grace at the Judgment seat of Christ, but what about those saved during the tribulation or the millennium? Have the Old Testament saints already been judged or will they too be at the Judgment seat of Christ?

Can a Christian be turned over to a reprobate mind? I just wonder because there are some people who seem to fall away from God and never desire to go back.