The United States is facing crucial crossroads as a nation with the impending leadership change this November and with traditional Christian values being challenged.

With so much changes confronting the U.S., American Christian leaders have decided to unite and gather together to pray for their nation next week in a solemn ecumenical assembly that will be called "The Gathering."

Thousands of Christians are expected to troop to the Gateway Church in Southlake, Texas on the night of Sept. 21 to pray in one voice and ask God for forgiveness and His wisdom to lead the U.S. towards spiritual transformation.

According to the event's official website, "The Gathering" will particularly focus on praying for four areas of change in Americans' lives: personal, families, communities and the nation.

"Whenever a solemn assembly or sacred gathering has been called in Scripture, it has usually been called by those in leadership — whether that be a priest, prophet or king — and it has usually been called for leadership first," the website of The Gathering stated.

It also noted that based on America's historical records, spiritual leaders of the past had always called for a gathering for prayer and fasting whenever the country needed national awakening.

Among the Christian leaders expected to join the event are Pastor Tony Evans of Oak Cliff Bible Fellowship in Dallas, Pastors Greg Laurie and Ronnie Floyd, along with James Robison, Bishop Harry Jackson, Anne Graham Lotz, and the Rev. Samuel Rodriguez.

Rodriguez said Christians cannot just sit down and wait for events to unfold during these crucial times.

"We stand at the precipice of losing our religious liberties via the conduit of judicial activism and legislative initiatives that view our Judeo-Christian values system as a threat to advancing a morally relativistic worldview. Complacency is captivity, we must pray, preach and vote," the Christian leader said, as quoted by Fox News.