Donald Trump has spoken out in regret at the divisions in American society.
He has also pledged to address falling wages, unemployment and the hardships of the economic downturn.
Trump was speaking at Great Faith Ministries, a non-denominational church in Detroit, traditionally a Democrat stronghold. He said the African-American voice had been the "conscience" of America for centuries.
CNN posted a video of the visit during which Trump said: "When I see wages falling, people out of work, I know the hardships this inflicts and I am determined to do something about it. I will do something about it, I do get things done, I will tell you. I'm going to get things done."
He said that America was too divided.
"Those who seek office do not do enough to step into the community and learn what's going on. I'm here today to learn, so that we can together remedy injustice in any form, and so that we can also remedy economics so that the African-American community can benefit economically through jobs and income and so many other different ways."
He cited 1 John 4:12: "No one has ever seen God, but if we love one another, God lives in us and his love is made complete in us."
He added: "The African-American faith community has been one of God's greatest gifts to America and its people."
The visit was not without controversy.
Some Jewish commentators were upset that Trump was pictured wearing a Jewish prayer shawl, or Tallit, in a Christian church.
The conservative Ann Coulter tweeted:
Donald Trump himself tweeted:
Omarosa Manigault, the US reality TV personality who featured on the first showing of Trump's US version of The Apprentice, tweeted:
Earlier, Trump spoke about his faith in God.
A CBN reporter asked him: "Tell me about God. Who is God to you?"
Speaking at the Trump National Golf Course in Los Angeles, California, Trump said: "I say God is the ultimate."
Describing the "incredible" landscape around them on the course, he added: "Here we are in the Pacific Ocean. I was able to buy this and make a great deal. That's what I want to do for the country. Make great deals. We have to. We have to bring it back."
He continued: "God is the ultimate. I mean, God created this. And here's the Pacific Ocean right behind us. Nobody, no thing, there's nothing like God."
