you understood 预定 as 故意安排,
somehow here
,comparing you believe 神没预定了犹大卖耶稣,
make more sense.

here 故意安排 against 犹大's will? no! 犹大卖耶稣 is 犹大's will,
thus, it is his responsibility. we cannot yell at God why
You didn't change 犹大's will as you did to Peter!
故意安排 Peter to be saved against Peter's will? Yes,
but God did something first to change Peter's will.