As we look ahead to Trinity Sunday this coming weekend, we consider the word Trinity. This is a very familiar word among Christians. So familiar that many are surprised to learn that the word Trinity is actually not found anywhere in the Bible. It comes from the Latin and has been used by the church to describe the Biblical Doctrine of who God is: One God in Three persons. While the Bible never uses the word “Trinity” is is clear in showing that there is only one God (Deuteronomy 6:4), but this One God is three persons (Matthew 28:19, 1 Peter 1:2), and that the Father is God (2 John 1:9), the Son is God (Ephesians 5:5), and the Holy Spirit is God (Acts 5:3-4). This is the doctrine of the Trinity, and is clearly presented in the Bible.

source https://burdenblessing.podbean.com/e/word-of-the-week-trinity/