Then Jesus made some remarks that they the
Jewish rulers didn't understand.

"no man is able to pluck them out of my
Father's hand." John 10:29

This is a promise for the believer that no man
or devil has the power to take us out of the
Father's hand.

But it doesn't mean that we ourselves can't
walk away from Him if we choose to. He gave
us a free will to abide with Him or go our own
way.