One God as Trinity is Father, Son, and Holy Spirit. While the Bible never uses the word Trinity, it clearly reveals one God in three Persons. The triune God works in perfect harmony from the beginning to the completion of our eternal salvation. There is election by God the Father, redemption by God the Son, and regeneration by God the Holy Spirit.
God the Father chose to save us by grace through His Son Jesus (Ephesians 1:4-6). God the Son came to reveal the fullness of God's grace to us (John 1:14). He died for our sins on the cross. He is risen from the dead to save us through faith in the gospel of Christ (1 Corinthians 15:1-4). God the Holy Spirit, also known as the Spirit of grace, applies our eternal salvation (Ephesians 1:13-14).
We may draw a triangle on paper to illustrate the Trinity. It is one triangle with three distinct points. So, there is one God in three distinct persons as Father, Son, and Holy Spirit. That is God in three Persons, blessed Trinity.
One God as Trinity is experienced in prayer. We pray to God our Father, in the name of God the Son, through the presence and power of God the Holy Spirit. Baptism declares our public testimony to the Trinity of God. Jesus commanded us to baptize believers in the name of the Father, Son, and Holy Spirit (Matthew 28:19).
