Summary: Understanding the gates of Life points out the significance of openings. Just as you have to be careful of those who come into you home, you must guard against what you watch, read or listen to if you do not want to introduce spirits of sin into your life
The gates of death:
Have the gates of death been opened to thee? or hast thou seen the doors of the shades of death?
The Gates of Praise:
Violence shall no more be heard in thy land, wasting nor destruction within thy borders; but thou shalt call thy walls Salvation, and thy gates Praise.
The gates of righteousness
Open to me the gates of righteousness: I will enter them, and I will praise the lord.
Likewise, Nehemiah mentions the Dung gate and the Valley gate.
Having looked at the various kinds of gates in the bible lets us examine the characteristics of gates. The bible makes it clear that gates can be good or bad, loved or hated.
The lord loveth the gates of Zion more than all the dwellings of Jacob.
Isaiah tells us that gates also lament and mourn:
And her gates shall lament and mourn; and she being desolate, shall sit upon the ground.
As seen in Lamentations, when a city is under oppression even the gates are affected. Lamentations speaks about gates being desolate:
The ways of Zion do mourn, because none come to the solemn feasts: all her gates are desolate: her priests sigh, her virgins are afflicted, and she is in bitterness.
If gates can lament and mourn this suggests that gates can laugh and rejoice. Surely what goes through a gate would be a determinant of the category it belongs to.
In the spiritual realm virtually everything has a gate: We have gates of heaven, and gates of hell.
Also, the treasures and riches of earth have gates that need to be opened for one to gain access:
Isaiah 45:1-3 (quickview)  states: Thus saith the LORD to his anointed, to Cyrus, whose right hand I have held to subdue nations before him; and I will loose the loins of kings, to open before him the two-leaved gates, and the gates shall not be shut;
I will go before thee, and make the crooked places straight: I will break in pieces the gates of brass, and cut asunder the bars of iron:
And I will give thee the treasures of darkness, and hidden riches of secret places, that thou mayest know that I, the LORD, who call thee by thy name, am the God of Israel.
From this biblical passage we gather that
-access to wealth could be gained through these spiritual gates (here referred to as leaves gates.)
This passage indicates:
-That there are hidden riches and wealth that no man has access to unless the Lord opens the spiritual gates that guide them to him.
-That unless a higher authority decrees otherwise, a gate of wealth and prosperity open to ones life may be shut by the enemy.