We the People  of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America.

From Elder L. Tom Perry:

Now let us go to the last poster, probably the most important to us, “America’s Future.” Today we are fortunate to live in a choice and promised land. It will remain free and blessed as long as its people remember the God who gave them life and this free land. We must remember that the family is the basic unit of a strong society. We are all part of God’s family; and as our Father, he expects us to build strong family units. It is in the family that the basic morality and righteousness should be taught that will keep America free. Each member of every family plays an important role in America. For several thousand years throughout this land the great fathers and mothers, the noble sons, the patriot sons, the choice daughters have forged America into what we have today.

It is America’s conscience that has preserved her. America is beautiful only when she is good, when children are laughing in her streets, and love abounds in her families. Without this conscience, civilization crumbles, as it has before on this continent. We are all part of America’s future. Our job is to remember the lessons of the past, to patch up the mistakes and the sins of everything that has gone before. The place to start is within our own families; and as we have been counseled, “No success can compensate for failure in the home.” That’s where we want to leave these people who come and have an opportunity of hearing our message, the most important message that will be taught during America’s Bicentennial year.

I want to issue you a challenge. I want you who are the best trained, the best educated, who have been given these great advantages here in America to literally become the conscience of America and the molders of its destiny and future. With your knowledge, your training, your understanding of how God works in the hearts of his children here on earth, let us obligate ourselves to temperance, to frugality, and to industry. Let us show justice, kindness, and charity toward our fellowmen. Let us demonstrate the love and reverence we should exhibit toward our Almighty God. Let us not trifle with the things that are holy to God.

Fifty-six men represented 2.5 million in 1776 to bring about a new nation that has literally blessed the whole world. That was one man to every 45,000. Today I’m calling on each of you to exert an influence over about 220 million people in this land. The odds are even better for you; the advantage is on your side. This is the time for you to be bold enough to stand up for what you believe, to let the world know that God still blesses this great land of America—if we will live righteously, according to that which he has commanded.

Will God bless us that we may have the courage to fulfill our responsibility here? I know by personal experience during these last two years that the heavens are still open, that he still does direct his work here. That message should ring from the hilltops of this nation during its Bicentennial. Will you have the courage to stand up with me and be counted with those who would preserve this land of the free through the righteousness of its people?

Read the full talk at http://lds.org/new-era/1976/07/gods-hand-in-the-founding-of-america?lang=eng