Does the Bible teach the Trinity?
Trinity: A word not found in the Bible, but used to express the doctrine of the unity of
God as subsisting in three distinct Persons. This word is derived from the Gr.
trias, first used by Theophilus (A.D. 168-183), or from the Lat. trinitas,
first used by Tertullian (A.D. 220), to express this doctrine. The propositions
involved in the doctrine are these: 1. That God is one, and that there is but
one God (Deut. 6:4; 1 Kings 8:60; Isa. 44:6; Mark 12:29, 32; John 10:30). 2.
That the Father is a distinct divine Person (hypostasis, subsistentia, persona,
suppositum intellectuale), distinct from the Son and the Holy Spirit. 3. That
Jesus Christ was truly God, and yet was a Person distinct from the Father and
the Holy Spirit. 4. That the Holy Spirit is also a distinct divine Person.
Source: Easton's 1897 Bible Dictionary.