This is confusing ! God has made some people for hell and destruction and some for mercy and glory, and their age and or race, nor status has nothing to do with it ! All is governed by Gods Sovereign Good Pleasure.
God doesnt get pleasure in the death of the wicked, thats speaking about the house of israel, has nothing to do with Eternal Salvation in Christ. The death there is a national death.
Thats what it means in Jn 1:29, the world is the Elect or the Body of Christ. Its a no brainer really since we know everybody hasnt had their sin/sins removed or taken away. Many are going to hell for their sins.