One Hundred Scriptural Arguments for the Unitarian Faith [7 pages]
by Samuel Barrett rated at 1.0 (5 votes so far)
100 biblical arguments that God is one (not three-in-one) from the early 19th century. Also available in French.
books
These books, written by people from diverse backgrounds, express the simple truth that God is one. Some of them are more scholary while others are more autobiographical. In addition, a few of them are available to read online. If you would like more in depth treatment of christian monotheism, these books are the next step to take. Note: if you know of other books, not listed here, please leave us feedback.
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The OT Teaches that God Is One
by Chuck LaMattina [9 pages]
rated at 3.4 (out of 15 votes)
There is only one true God and one person who is God. All Christians agree that there is only one true God. But all Christians do not agree on whom precisely that one God is. Millions of Christians profess that God is a Trinity of persons. They have been told that God consists of three distinct persons, the Father, Son and Holy Spirit, who together make up one God. Yet, the Old Testament adamantly and clearly teaches that God is a single individual.