HOUSTON — Standing on a stage surrounded by thousands of fellow Christians on Saturday morning, Gov. Rick Perry of Texas called on Jesus to bless and guide the nation’s military and political leaders and “those who cannot see the light in the midst of all the darkness.”

“Lord, you are the source of every good thing,” Mr. Perry said, as he bowed his head, closed his eyes and leaned into a microphone at Reliant Stadium here. “You are our only hope, and we stand before you today in awe of your power and in gratitude for your blessings, and humility for our sins. Father, our heart breaks for America. We see discord at home. We see fear in the marketplace. We see anger in the halls of government, and as a nation we have forgotten who made us, who protects us, who blesses us, and for that we cry out for your forgiveness.”

In a 13-minute address, Mr. Perry read several passages from the Bible during a prayer rally he sponsored. Thousands of people stood or kneeled in the aisles or on the concrete floor in front of the stage, some wiping away tears and some shouting, “Amen!”