In the new covenant, we have the privilege of being children of God, yet the peak of our relationship and interaction with God is being His bride. The cause of Joy in heaven in Revelation 19:7 was that the bride had made herself ready. Note that there is the bride that will make herself ready based on the materials provided for her, 2 Peter 1:2-4 and there are those who will be made ready via the great tribulation. A woman may move around freely, but the moment she is aware that a man seeks her hand in marriage, her disposition and interaction with other people, especially other men changes, because she wants to be worthy of that choice on her to be a wife. Much more, we in the new covenant have such a great call, where the King of the universe would like to share all He is and has with us via the covenant of marriage. It is therefore necessary to prepare for this great call.