Mark 12:25
For when they shall rise from the dead, they neither marry, nor are given in marriage; but are as the angels which are in heaven. For when they shall rise from the dead, they neither marry, nor are given in marriage; but are as the angels which are in heaven.
Christ's words answer the Sadducees, who deny the resurrection and reject future rewards and punishments, when they came to entangle Him with the Mosaic-law case of seven brothers successively married to one childless wife in order by ridicule of that law to bring all Mosaic institutions into contempt. Their question rested on a false foundation, and their error came from not knowing the Scriptures nor the power of God. The answer declares that those who rise from the dead neither marry nor are given in marriage but are as the angels which are in heaven.
It means earthly marriage and its relationships and affairs of life are not continued or resumed after the resurrection. The future life is not a continuation of earthly life with its relationships, passions, frailties and propensities, nor a raising of the same particles of matter to live exactly as before death. It lifts the veil to show the future life as immortal life given by God's power, exalted above the finite life. By refuting the Sadducees' denial and ridicule, it guarantees a literal bodily resurrection in which the precious dead from Abel down to the last saint who dies will hear the voice of the Son of God, come forth from their graves and live again, because God is not the God of the dead but of the living, with a close and tender relationship between God and His resurrected saints according to the divine plan.
It forever settles that the marriage relation as instituted in Eden will not exist in Paradise, so there will be no marriages and no births in the new earth. Its words are too plain to be misunderstood, and it covers both those raised from the dead and those translated without seeing death, who will be as the angels of God, members of the royal family. It is a plain declaration about the future state that is to be accepted without holding contrary views — toward such views silence is eloquence — since indulging suppositions and theories beyond what God has made known is presumption and no speculation about the future state is needed.