The Holy Trinity
The word ‘Trinity’ is derived from two Latin words, tres , three, and unitas , one). It is used in Christian theology to express essential biblical truths about God, namely: (1) the unity of God; (2) the Father is God, the Son is God and the Holy Spirit is God; (3) the Father, the Son and the Holy Spirit are distinct Persons. One God Our belief in one God is fundamental; Christianity is a monotheistic religion. The Old and New Testaments both assert the unity of God: ‘Hear, O Israel: The LORD our God, the LORD is one!’ (Deut 6:4); ‘I am the First and I am the Last; besides Me there is no God’ (Isa 44:6); ‘There is one God, and there is no other but He’ (Mark 12:32).