This week, America celebrates another birthday. Americans are hoisting their flags, marching in parades, and setting off fireworks. I get a thrill every time I hear the band strike up “The Stars and Stripes Forever.” And I get a lump in my throat whenever I join in singing “America, America, God shed His grace on thee.”

Indeed, God has blessed America. This nation, dedicated to the proposition that all men are created equal and endowed by their Creator with certain unalienable rights, has endured for 230 years. America is the oldest constitutional republic on earth.

But all is not well in our land. When Thomas Jefferson penned the immortal words of the Declaration of Independence, he deliberately appealed to the Creator. He acknowledged an overriding obligation to “Nature and Nature’s God.” And he understood that ordered liberty is not just a subjective preference, but a divinely ordained condition for which human beings are designed.

But over the last few decades, legions of skeptics have mounted a massive assault on these “self-evident truths.” In prestigious law schools, in the halls of government, and especially in the Supreme Court, God is often banished from public conversation. If a public school teacher were to introduce Jefferson’s ideas and language into the classroom today, she would likely be called on the carpet.

This assault on God in public culture severely damages our republic. If God is thrown out of our history, we lose our basis for believing that individuals have rights and dignity. In an empty universe, we have no meaning, no value. Without God, there are no unalienable rights, and no certain proof that liberty is better than tyranny, or that life is better than death. Everything is a matter of opinion and power.

The references to God in the Declaration of Independence provide a foundation for an ongoing moral conversation within civil society. And moral truths pervade our founding documents from beginning to end. Without God as the source of all those moral principles, the public square would quickly revert to the law of the jungle. Brutish power would prevail. The weak, the unborn, the elderly, and the gravely ill could be quietly terminated.

As much as I enjoy the anthems and the fireworks, more than that is called for on this July 4th. We need to confess our moral failures and our national sins—repent of the lies that have justified killing innocent babies and the elderly. Renewal begins on our knees. It is there that we hear soul searching questions from God Himself, asking, “How long will you defend the unjust and show partiality to the wicked? . . . Rescue the weak and needy; deliver them from the hand of the wicked” (Psalm 82).

Our nation’s founding document declared independence from Great Britain; but, with equal fervor, dependence upon God. Expressing “firm reliance on the Protection of divine Providence,” the signers committed the American experiment to their Maker. The spirit of 1776 was one of reverence and trust.

I have been studying Jeremiah in my devotions lately, and I am struck by the chilling parallels with today. Time is running short, I fear, for this great, noble experiment in freedom. Turn to God, and tell your neighbors to do so while there is yet time.