That does not make him devout Christian
Quote:Abraham Lincoln grew up in a highly religious Baptist family. He never joined any Church, and was a skeptic as a young man and sometimes ridiculed revivalists. He frequently referred to God and had a deep knowledge of the Bible, often quoting it. Lincoln attended Protestant church services with his wife and children. "Especially after the death of his young son Willie in 1862, Lincoln moved away from his earlier religious skepticism."[1] Some argue that Lincoln was neither a Christian believer nor a secular freethinker.[2]
https://en.m.wikipedia.org/wiki/Religiou...am_Lincoln
teachings of the Bible are so muddled and self-contradictory that it was possible for Christians to happily burn heretics alive for five long centuries. It was even possible for the most venerated patriarchs of the Church, like St. Augustine and St. Thomas Aquinas, to conclude that heretics should be tortured (Augustine) or killed outright (Aquinas). Martin Luther and John Calvin advocated the wholesale murder of heretics, apostates, Jews, and witches. - Sam Harris, "Letter To A Christian Nation"