That is the basic condition to go into the Kingdom. Unification can come through the vertical standard. Unification has a central common purpose. Harmony, balance and unification can be made only by true love. Only love can make the unification of the five senses.
Unification is essentially the unification of the invisible mind.
For example, marriage centering on the mind is real marriage. The true love is the content to accomplish the ideal of cosmic unification. True unification is a joint venture of God and man. True unification is true love unification. If you hold on to your opinion, there can't be unification.