Selective Hearing

In the book of Revelation chapters 2 and 3(not exclusively here) God says on several occasions "He that hath an ear let him hear what the Spirit says".  Or another way to approximate that is "Now think through what has been said".  In order to think through what has been said you have to have heard first.  The clutter and clamor of all that is going on all to often prevents us from hearing what the Spirit says.  How can we possibly be obedient or make necessary adjustments if we don't even hear what is said in the first place?  He is speaking, listen!