There are many locks in my house and all with different keys, but I have one master-key which opens all. So the Lord has many treasuries and secrets all shut up from carnal minds with locks which they cannot open; but he who walks in fellowship with Jesus possesses the master-key which will admit him to all the blessings of the covenant; yea, to the very heart of God. Through the Well-beloved we have access to God, to heaven, to every secret of the Lord.