In heaven, there will be no marriage. Heaven will be better than the best marriage. We will live like the angels.
In heaven, we will see Jesus face to face (1 Cor 13:12; Rv 22:4). "We shall be like Him, for we shall see Him as He is" (1 Jn 3:2).
Heaven is perfectly symmetrical and beautiful (Rv 21:16-21). It is full of light (Rv 21:23; 22:5) and life (Rv 22:2).
"Nothing deserving a curse shall be found there. The throne of God and of the Lamb shall be there, and His servants shall serve Him faithfully" (Rv 22:3). "Day and night they minister to Him in His temple; He Who sits on the throne will give them shelter. Never again shall they know hunger or thirst, nor shall the sun or its heat beat down on them, for the Lamb on the throne will shepherd them. He will lead them to springs of life-giving water, and God will wipe every tear from their eyes" (Rv 7:15-17).
In heaven, we will have the same bodies that we have now, but these bodies will be glorified — clothed with incorruptibility and immortality (1 Cor 15:53).
These are a few revelations about heaven, but we have no words in our languages, thoughts in our minds, or pictures in our imaginations that can begin to express the glory of being with the Lord forever in heaven. "Eye has not seen, ear has not heard, nor has it so much as dawned on man what God has prepared for those who love Him" (1 Cor 2:9). Love Jesus. Live for Him alone. Go to heaven.