While in high school in Paradise, CA, Horton adopted Calvinistic beliefs and began attending the Philadelphia Conference on Reformed Theology, where he met James Montgomery Boice, R.C. Sproul, and J.I. Packer.
While in high school in Paradise, CA, Horton adopted Calvinistic beliefs as he read through the Bible, specifically the book of Romans. He began attending the Philadelphia Conference on Reformed Theology, where he met James Montgomery Boice, R.C. Sproul, and J.I. Packer.