I would think the question Jesus was answering about marriage in heaven would give context to understanding the nature of our resurrected body as well as the New Heaven and the New Earth. In this life you may have just one God ordained marriage, or you could have more than one, depending on circumstances. To enter eternity with God the spiritual condition of your wife (wives) does not factor in, its your relationship with Christ that matters. Now the Mormons teach the wife/wives of the Mormon man will have to wait in the grave until her/their husband calls her/them out. Then she/they will be eternally pregnant so they may populate the world they will be gods over. My wife says that would not be heaven to her.The Muslims say they are going to have sex in heaven a lot (you know the promise of many virgins for the faithful and martyrs). Not sure where that leaves the Muslim wives, but I'm thinking in Muslim heaven there will be a shortage of virgins (we are already seeing that shortage on earth these days).For Christians, we have some instruction/teaching on the nature of eternal life in heaven, but its the One who sits on the Throne whose going to fill in the missing details.