G4880–συναποθνήσκω–sunapothnēskō

"Even if I must die with you," declared Peter again and again, "I will never disown you." In like manner protested also all the disciples.

συναποθανεῖν sunapothanein “to die with”

I do not say this to imply blame, for, as I have already said, you have such a place in our hearts that we would die with you or live with you.

συναποθανεῖν sunapothanein “to die together”

Faithful is the saying: "If we died with Him, we shall also live with Him;

συναπεθάνομεν, sunapethanomen “we have died with [Him],”