Orthodox Christian theologians define the doctrine of the Trinity as the belief that the Father is God, the Son is God, and the Holy Spirit is God, existing eternally as three distinct Persons within one single, undivided divine Being.
These three Persons are considered entirely co-equal in power and co-eternal in time, with the Son being understood as 'eternally begotten' of the Father and existing simultaneously as 100% God and 100% man. The platform notes that many modern Christians mistakenly believe they are practicing Trinitarianism simply by acknowledging the Father, Son, and Holy Spirit, without understanding the complex historical and philosophical mechanics required by the formal church dogma.