All Things in God's Time

Why were all these pictures and types of Christ faulty? Why did all the types and picture have to fall away? Will the LORD ever abandon His own, even when they wander? How was Nathan an instrument to point David to Christ? Are all men in rebellion towards God? Who are those that love God? Who are those called according to His purpose? Why do false preachers deny that Christ redeemed His own at the cross when He died?