In case you missed it, we’ve had a revolution in America. No one’s blood was spilt; but the establishment was sternly rebuked by the unitary representative of the people of the United States, namely, the President of the United States:
We, the citizens of America, are now joined in a great national effort to rebuilt our country and to restore its promise for all of our people…
Today’s ceremony, however, has very special meaning, because today we are not merely transferring power from one administration to another, or from one party to another — but we are transferring power from Washington, D.C. and giving it back to you, the American People.
For too long, a small group in our nation’s Capital has reaped the rewards of government while the people have borne the cost. Washington flourished — but the people did not share in its wealth. Politicians prospered — but the jobs left, and the factories closed.
The establishment protected itself, but not the citizens of our country. Their victories have not been your victories; their triumphs have not been your triumphs; and while they celebrated in our nation’s capital, there was little to celebrate for struggling families all across our land.
Unless the Lord builds the house,
those who build it labor in vain.
Unless the Lord watches over the city,
the watchman stays awake in vain.
Psalm 127:1 English Standard Version (ESV)
…Psalm  shows that the order of society, both political and domestic, is maintained solely by the blessing of God, and not by the policy, diligence, or wisdom of men…
Except Jehovah build the house…In affirming that God governs the world and the life of man, [Solomon] does so for two reasons:
First, whatever prosperous event may fall out to men, their ingratitude is instantly manifested by their ascribing it wholly to themselves; and thus God is defrauded of the honor which is his due. Solomon, to correct such a perverse error, declares, that nothing happens prosperously to us except in so far as God blesses our proceedings.
Secondly, his purpose was to beat down the foolish presumption of men, who, setting God aside, are not afraid to undertake to do anything, whatever it may be, in exclusive reliance upon their own wisdom and strength. Stripping them, therefore, of that which they groundlessly arrogate to themselves, he exhorts them to modesty and the invocation of God.
But, this doesn’t mean we should sit on our hands; Calvin says:
He does not, however, reject either the labor, the enterprises, or the counsels of men; for it is a praiseworthy virtue diligently to discharge the duties of our office. It is not the will of the Lord that we should be like blocks of wood, or that we should keep our arms folded without doing anything; but that we should apply to use all the talents and advantages which he has conferred upon us.
It is indeed true that the greatest part of our labors proceeds from the curse of God; and yet, …had [humankind] still retained the integrity of their [original] state, God would have had us to be employed, even as we see how Adam was placed in the garden of Eden to dress it. (Genesis 2:15.)
Solomon, therefore, does not condemn watchfulness, a thing which God approves; nor yet men’s labor, by which when they undertake it willingly, according to the commandment of God, they offer to him all acceptable sacrifice; but lest, blinded by presumption, they should forcibly appropriate to themselves that which belongs to God, he admonishes them that their being busily occupied will profit them nothing, except in so far as God blesses their exertions.
From this, Calvin lays out an admonishment for all, including us:
…It behooves us to remember what I have just now touched upon, that since the minds of men are commonly possessed with such headstrong arrogance as leads them to despise God, and to magnify beyond measure their own means and advantages, nothing is of more importance than to humble them, in order to their being made to perceive that whatever they undertake it shall dissolve into smoke, unless God in the exercise of pure grace cause it to prosper…
Let us then so occupy ourselves, each according to the measure of his ability and the nature of his office, [in such a way that] the praise of the success attending our exertions may remain exclusively with God. The partition which many devise — that he who has behaved himself valiantly, while he leaves the half of the praise to God, may take the other half to himself, is deserving of all condemnation. The blessing of God should have the whole share and exclusively hold the throne.
Finally, commenting on his times and ours, Calvin says:
…It is not wonderful to find in the present day the state of the world so troubled and confused as it actually is — justice put to flight in cities, the husband and the wife mutually accusing each other, fathers and mothers complaining of their children — in short, all bewailing their own condition.
For how few are to be found who, in their vocation, turn to God, and who, being rather inflated with arrogance, do not wickedly exalt themselves? God then justly renders this sad reward to ungrateful men when he is defrauded of his honor.
But were all men humbly to submit themselves to the providence of God, there is no doubt that this blessing which Solomon here commends would shed its luster on all parts of our life, both public and private…
Therefore, let’s reflect on and, especially, do what the Apostle Paul exhorted:
…I urge that supplications, prayers, intercessions, and thanksgivings be made for all people, for kings and all who are in high positions, that we may lead a peaceful and quiet life, godly and dignified in every way. This is good, and it is pleasing in the sight of God our Savior, who desires all people to be saved and to come to the knowledge of the truth. 1 Timothy 2:1-4 (ESV)