There is a popular song which states that when the saints of God march into heaven, we the singers want to be numbered among them. We want to be part of heaven's marching band. A marching band is an interesting depiction of the kingdom of God. Bands generally are precision trained to move in unison. They never have individuals who move in accordance with their unique choreography.
One of the beauties of marching bands is their picturesque unity. That unity does not manifest automatically, it comes with practice and with the fixing of many mistakes. It also requires a desire to move as one with each step they take. If someone does not wish to apply at least a minimum effort to forge unity, they probably should not be part of the band. They would be better off performing a solo act.
When you think of a band you also imagine that they are dressed in similar clothing. Each member has all the pieces required to complete their uniform. One never sees someone who is missing any aspect of the performance clothing. The same requirement of unity and completeness in their appearance should apply to heaven's marching band. Heaven deserves at least the same rigorous training and precision that is afforded a high school marching band.