To start things off here is a quote from John MacArthur:
Here are some Covenant/Reformed/Calvinist teachings:MacArthur: It’s not that He [God] merely sees what will happen in the future; rather He ordains it. The Bible clearly teaches that God sovereignly chooses people to believe in Him.”MacArthur Study Series (Chariot Victor Books, 1992), p 58.
If you are a "true Christian" God will prevent you from sinning or Backsliding Because you made Jesus Lord-lordship salvation
One will remain in the faith because God has sovereignly chose before hand who is to be saved, Hence the elected cannot lose their salvation, And if they do fall away it is proof the were not saved or chosen in the first place-Calvinism
A person does possess human freedom before regeneration but after regeneration, one is unable to commit willful or fall away in this new regenerated state- Monergism
Are we in control of what we choose? Are we are in control of what we do regardless if Jesus is our Savior and lord, That remaining in the faith is our responsibility as free moral agents?
Sorry, I know this is a bit long