Blasphemous statement. Peter said by His stripes/death we were healed 1 Pet 2:24
Who his own self bare our sins in his own body on the tree, that we, being dead to sins, should live unto righteousness: by whose stripes ye were healed.
The word healed is the greek word iaomai and means:
to make whole i. e. to free from errors and sins, to bring about (one's) salvation:
Which you don't need because you think that you have been predestinated.