In life there are doors that we desire to enter in that are shut whether it be, jobs, positions, possessions, relationships that are shut and no matter what we do we cannot obtain it; they are not meant for us. But, there are those doors or gates that are meant for us to enter there in, that God by his grace opens for us and no one can enter. Now, we can never enter fully through the door that God sets before us, we could only enter to the vestibule because He always reserves a place for himself. At the vestibule we can find the blessings God sets for us and there we can see through the window but with limitations, because Paul said that we see vaguely (1Cor. 13:12) as if through a glass. One of the things about entering through the vestibule is that one can enter and leave at anytime, where as when one completely enters through the main door there is no turning back.
Ezekiel 44:1-3
44 Then he brought me back the way of the gate of the outward sanctuary which looketh toward the east; and it was shut.
2 Then said the Lord unto me; This gate shall be shut, it shall not be opened, and no man shall enter in by it; because the Lord, the God of Israel, hath entered in by it, therefore it shall be shut.
3 It is for the prince; the prince, he shall sit in it to eat bread before the Lord; he shall enter by the way of the porch of that gate, and shall go out by the way of the same.
The bible tells us about a gate that is opened to everyone in which leads to destruction and being astray. As well, there is a gate that leads to life of which is hardly noticeable (Mat. 7:13) but available to all. Before we can enter in through the vestibule, to be before the gate God enters in, what so ever there is damaged or dead He will clean it or revive it for us. Before Jesus entered into a city as he drew closer to the gate of the city the people were carrying a dead child in a coffin and he revived him (Lk7:12). Things happen at the vestibule of the gate in preparation for us. Take for example what happened at the vestibule of the gate in the porch at Bethesda a pool where many people with diverse sicknesses went to wait for an angel who entered the pool inside the gate to stir the waters (Jh5:4-9). At the entrance or vestibule of the gate many things happens because the Lord passes through there to enter the ultimate door of life; it is the eternal path of man. So, the doors of which the Lord opens for us in life are set for signs by which we need to continue to enter there in; whether they are jobs, relationships, or possessions, they lead to that window by which we could only see vaguely.