Man just live acording to His will and planning and provision, which is by themselves full of care and sufficiency. The rules of heaven are that of faith in God for everything. It is about living out for God. For in Christ is gain. God came to find His lost sheep.
Sheep being lost are poor in spirit.
They are looking for help, leadership, safety for life. They have come home. They are under protection. They have not entered the kingdom, and are naturally outsiders. What gain has pride and high-spirits achieved, but difficulties, lack of God, lack of shelter and care, and away from union with God.