Actually, no one can “kill” a Christian. It’s been well-said that death isn’t the termination of existence, but the entrance into an eternal and unchanging state. The Christian has been “sealed” with the life of God Himself. All a murderer does is promote those who trust in Christ from this pain-filled futile existence into eternal reality. Then, in the coming kingdom, we will enjoy forever an earth where “the wolf and the lamb shall feed together, the lion shall eat straw like the ox” (Isa. 65:25).
“You can kill us, but you cannot do us any real harm.” Justin Martyr (martyred A.D. 165)
Acts 7:59 And they stoned Stephen as he was calling on God and saying, “Lord Jesus, receive my spirit.”