U.S. president Donald Trump testifies that he is a Christian, and while his personal walk with the Lord remains mostly private, here are some of the things that we do know about Donald Trump and his personal faith.

1. He is Presbyterian

Trump says that he first attended the First Presbyterian Church in Jamaica, Queens, and the congregation has confirmed that. Trump has said he is surprised that not many people know that he is protestant, but he says he is an active Christian, participating in various activities within the denomination.

Trump claims that he currently attends Marble Collegiate Church on Fifth Avenue in Manhattan, although a representative of Marble Collegiate Church has told CNN that Trump is not a regular member.

2. He doesn't ask for forgiveness

A cornerstone of Christianity is the importance of repentance, turning away from sin and asking God for forgiveness. Trump, however, has said that he personally does not ask for God's forgiveness.

When asked about whether he has asked God for forgiveness, Trump said, "I am not sure I have. I just go on and try to do a better job from there. I don't think so."

Speaking to CNN, Trump said: "I think if I do something wrong, I think, I just try and make it right. I don't bring God into that picture. I don't."

3. He goes to church

Trump has said that he goes to church on a regular basis, although he has indicated that he mainly goes on "major" occasions, and on Sundays "when I can". Without going into too much more detail he describes himself as a "Sunday church person."

He said: "[I go to church] as much as I can. Always on Christmas. Always on Easter. Always when there's a major occasion. And during the Sundays. I'm a Sunday church person. I'll go when I can."