'Preservation' in the Bible

Therefore I encourage you to take some food, for this is for your preservation, for not a hair from the head of any of you will perish.”

for I know [with confidence] that this will turn out for my deliverance and spiritual well-being, through your prayers and the [superabundant] supply of the Spirit of Jesus Christ [which upholds me].

But we are not among those who shrink back to destruction, but among those who have faith to the preservation of [our] souls.