How do Trinitarians understand Deuteronomy 13?

### Introduction Christian Trinitarians believe "that there is one eternal being of God – indivisible, infinite. This one being of God is shared by three co-equal, co-eternal persons, the Father, the Son, and the Spirit". The Hebrew bible book of Deuteronomy makes a few statements about the oneness of God: > **Deuteronomy 6:4** - "Hear, O Israel: The Lord our God, **the Lord is one**." > **Deuteronomy 4:35** - "To you it was shown, that you might know that the Lord is God; **there is no other besides Him**." These statements do not make distinctions between *being* and *personhood* and seem to point to a divine simplicity. ### "Gods you did not know" Deuteronomy later contains a stark warning for the Israelites about false gods and prophets, saying: > **Deuteronomy 13:1-3** - If prophets or those who divine by dreams appear among you and show you omens or portents, and the omens or the portents declared by them take place, and they say, **‘Let us follow other gods’ (whom you have not known) ‘and let us serve them,’** you must not heed the words of those prophets or those who divine by dreams, for the Lord your God is testing you... The key injunction being against *other gods whom you [the Israelites] did not know*. ### Question - Do Trinitarian Christians believe the audience of Deuteronomy 13 (Israelites) knew of a triune god? - If Israelites did not know a triune god, why do Trinitarians believe Deuteronomy 13 doesn't prohibit following after a trinity? *This question is not suggesting that the trinity added new gods, but potentially that a triune god is different ontologically from a unitary god such that they cannot have the same identity (example: Trinitarians likely believe that the Mormon god is not the same god as the trinitarian god because the Mormon god is a created man who was exalted to godhood, therefore the Mormon god's fundamental nature is different from the trinitarian god)*