ONE: In sacred Scripture "one," ehad, in Hebrew, represents unity and is the quintessential number of monotheism, the worship of one God.
This concept of one as a unity of one God is expressed in the opening lines of the first profession of faith found in Scripture, the Shema: Hear O Israel, Yahweh our God, Yahweh is One [Deuteronomy 6:4].
One as a cardinal number symbolizes Unity. The number One is indivisible and not made up of any other number representing the unity of the One true God in which there is no division
One as an ordinal number denotes primacy, sovereignty, divine completeness or perfection.
Christians recognized the number "one" in Scripture as symbolic of the First Person of the Most Holy Trinity, God the Father.