A very important key of the Kingdom is prayer. John 14:14 says:
If ye shall ask anything in my name, I will do it.
This is an open cheque. Speaking of prayer, we should also note that it includes thanksgiving and praises. If you can give thanks and praise God while praying effectively, closed doors will be forced open. However, for your prayers to work, you must maintain a right standing with God. James 5:16 says:
Confess your faults one to another, and pray one for another, that ye may be healed. The effectual fervent prayer of a righteous man availeth much.
To open doors, your prayer should be persistent, hot and fiery. It should be laced with God’s word stating the basis of your prayer and arguing your cause. How do you pray? Strive also to pray in the Holy Ghost to increase the effectiveness of this key.
Another key is the master key of holiness (Deuteronomy 28:1-13). If you live holy, all doors will look in your direction and open to you. Many people think they can get rich through fraudulent means. Yes, they can but that leaves God out of the equation. Any blessing that God is not in is cursed. Some people do not want to hear about holiness when business is being discussed because they think it will hinder increase or prosperity. How wrong! Holiness will only prevent you from receiving cursed money and any increase that may erode your blessings. But on the other hand, holiness will deliver true riches and lasting prosperity to you. It is the money, increase or promotion you make through the fear of God that shall endure. Deuteronomy 23:18 says God forbids any prostitute from bringing an offering or tithe into His house from the proceeds of her illicit trade. It is an abomination! Proverbs 20:23 says it is wrong to cunningly reduce the cup or vessel for measuring seeds or food items in a bid to cheat the buyer. In doing your business, you must not tell lies, or make false declarations. You don’t have to lie about your age or fill forms that you have several dependants when you don’t, because you want to reduce your taxes. God wants you holy so that the key of holiness can work for you.
If you try the key of giving, faith, praise or prayer while living in sin, they will not work. For these keys to work, they must be combined with the key of holiness.