"And this is the will of Him who sent Me, that everyone who SEES the Son and BELIEVES in Him may have everlasting life; and I will raise him up at the LAST DAY." (John 6:40)
Most human beings have never SEEN Jesus. And among those who did SEE Him when He was on earth, none actually believed in Him for their own victory over death until AFTER His resurrection. However, there is coming a time when everyone SEES and BELIEVES. After that will come The Last Day when Jesus will raise them all up!
"For to this end Christ died and lived again, that he might be Lord both of the dead and of the living." (Romans 14:9)
“For this reason also, God highly exalted Him, and bestowed on Him the name which is above every name, so that at the name of Jesus EVERY knee will bow, of those who are in heaven and on earth and under the earth, and that EVERY tongue will confess that Jesus Christ is Lord, to the glory of God the Father.” (Philippians 2:9-11)
God’s Plan for humanity is completed on The Last Day.
“In all wisdom and insight He made known to us the mystery of His will, according to His kind intention which He purposed in Him…the summing up of all things in Christ, things in the heavens and things on the earth.”
“As in Adam ALL die, even so in Christ shall ALL be made alive…that God may be All in ALL.” (1 Corinthians 15:22-28)
Jesus the Christ, the Son of God will one day be SEEN by ALL, believed in by ALL, and then God the Father will be "All in ALL".