Then I must ask you the question again: Why did Jesus Christ die?
He was the payment for all sins...and the critical perfect example of love and patience which we must also employ. His success even during extreme torture, enables us to also have the love to endure. Without patient endurance, there is no salvation....for the most part. There was the thief on the cross who received it right then and there, but we must not depend on that at the end of our lives in order to be in the Kingdom.
There is a scripture that says basically ...become new by the renewal of your mind from within..that along with the Be Still and know that I am God passage...is EXACTLY what Roy Masters teaches with the rediscovered be still exercise. Jesus told his disciples to sit and watch, do not sleep, in the garden, lest evil overtake them. That is all the Be Still is...watching the mind so that we become detached from the evil within so we can have the power of the holy spirit activate our lives. Very very simple silent prayer.