Lincoln believed in a God and had a strong sense of Providence, but didn't go in for the answers that different faiths and denominations gave to the questions we all have. Beyond a minimal core of faith in a creator, his views were more negative than positive. Much the same thing could be said of Washington, Franklin, Adams, and Jefferson.
But hey, a "Great Emancipator" was a Swedenborgian. Robert Carter III embraced your faith in the late 18th century and freed his 500 slaves. See the recent book The First Emancipator.
Well the Church as an institution was in it's infancy then. What he held to be true in his heart is what matters.Today, Church of the Holy City in Washington DC has a blog site and many congrations are available in the Convention and New Church. They differed in focus but seem now to be coming together in purpose
Personally, my wife and I attend our community Episcopal Church for sacrament of Holy Supper. I can listen to sermons online at anytime or study the Writings. Membership to a brick and mortar institution is pretty meaningless in the next life.
Thank you for the referce to Robert Carter III - I will research him.
Blessings,