Cool post.  It's true that we need to watch and work on what we say.  As someone who used to curse like a sailor (no offense to the sailors out there),  I still find that I struggle with falling back into things like that when driving or smashing a thumb or something...

I know that you also are talking about full-on conversations and interactions with folks, and I agree there too.  I think one added 'issue' I have is that I think too much about how I will be perceived if I don't 'get it just right' when talking to someone, but I need to let it go and let the Spirit speak through me.  I'm just the squawk-box, as I like to say  :) 

Jesus simply spoke to the fig tree,

Mat 21:19  And when he saw a fig tree in the way, he came to it, and found nothing thereon, but leaves only, and said unto it, Let no fruit grow on thee henceforward for ever. And presently the fig tree withered away.  

what we say is very important, also:

Mat 12:36  But I say unto you, That every idle word that men (including us Christians) shall speak, they shall give account thereof in the day of judgment.  

such words of wisdom!

Yes, by all means let's "speak life" to others, God will listen and do whatever we ask right?  That ten year old boy with cancer, let's just all "speak life" to him.  Oops, it didn't work.  Someone must have doubted.

Or, let's all "speak" a new job, or a new car for ourselves.  Or, let's all forget we are sinners saved by our Lord bleeding and suffocating to death so we wouldn't have to die for eternity..   Yes, that's the Biblical way to live.

Sorry, I don't buy it.  I've seen "christians" acting like everything is ok, and we wonder why the world doesn't take us seriously.  God will do what God will do.  It doesn't matter what you think, or what you want folks!  Come on!

Certainly be Christlike to each other, but don't be fooled by this "power of speach" lie that makes us look foolish, and accomplishes nothing except to make us feel better about ourselves.  Christianity involves suffering.  Loving others involves suffering.  If you are not suffering you may not be a christian.

Looks like two extreme sides are suggested here, so I'll offer the balance.

On the one hand it is true that the words we use have an impact on our demeanor, attitude, and how we relate to others.  Words can get us into trouble in that spreading lies can devour one's career, ministry, family, community, or an entire country (cf. James 3).  If anyone doubts the negative power of words, try telling your wife that those pants do make her butt look big!  Conversely, speaking things positively, affirmatively, gently, and lovingly can certainly exhort others and lift them up. This seems to be the heart of David's original message that we could all agree to.  But there are other features of his blog that seem to treat speaking such words as though they are incantations that can harness certain forces in the world to succomb to our demands.

On the other hand, we have the more obscure and controversial "You will be amazed at how God partners with power with your conversations. For there is life and death in the content of your words and out of your mouth flow the issues of life. God wants so much for us and it is not his will that we struggle in our relationships. So we must make our words our ally and with intention speak life and love!"  This leads to the cynical reaction given by Paul just above me.  Paul's concern is that this kind of thinking is a lie, that it's foolish, and that we are ultimately called to suffer (where our very Christianity seems to depend on it).  Again, there is a nugget of truth here that we should all affirm - but it, too, is an extreme view (particularly this latter point).

The balance:  Yes, words do psychologically impact ourselves and each other.  We can harm with a curse or uplift with a blessing.  But the Bible does not make a case for speaking such words so that the external world is somehow altered by the utterance of those words (like an incantation).  That words have an inherent or "God-endowed" power to augment or diminish nature is anything but biblical.  References to "and God said Let there be ..." are not indications that speech is a means for altering reality.  Rather, the Old Testament writers use this colloquial device to delineate how creation is effortless for God.  We do this today when we say things like, "All you have to do is give the word, and it's done!"  We don't mean that words mysteriously create or alter reality, but that carrying out the demand is without restraint.  Now, must a Christian experience suffering to be a Christian?  This, too, is nonbiblical.  The condition for one's salvation is confessing Jesus' divinity and affirming His resurrection from the dead (cf. Romans 10:9-10).  The reality is, not all Christians will suffer (at least not suffer in the same way).  Comparatively, the first few centuries of Christianity witnessed quite a bit of martyrdom for the early church.  I dare say most living in the United States have never and will never have to undergo such an ordeal.  I find no precedent for thinking that my lack of being fed to the lions in the colosseum or living an impoverished life compared to third-world countries is somehow a damnable offense.

Absolutely TRUE !!..........The Balance is Like a See Saw - Teeter Totter.

Some People are Up & Some are Down.........Which Will You Be ???

Like It or Not......You are Created In Gods Image.

He Spoke & We Speak.

How can anyone not Understand All The Teachings That Jesus Spoke?

Gee He .......Spoke Too.

Like it or not every person has to walk in FAITH You Must say Let There Be,

Work, Food, Shelter etc., etc.

Everyone says I will do this or That before they do anything.

Some People just Speak a Good, Better, Best way of Speaking.

They Decide To Do Greater Things set Bigger Goals Etc.

Everyone is Creating like it or not.

Some Just Create Better Things.

Manifesting The Same Jesus Wherever They Go.

Rather Than No Jesus.

So....Know Jesus ?