“My Father, which gave them me, is greater than all; and no man is able to pluck them out of my Father's hand.”
King James Version (KJV)
Joh 10:29 No [man] is able to pluck [them] out of my Father's hand. The sheep who hear his voice and follow him (Joh 10:27). This is the condition of their safety. If they comply with it God's grace will save them from the adversary.