In 2 Cor. 13:14, we receive the blessing of the Father, Son and Spirit, three Persons, one God. Rev. Paul van Engelenhoven explains how we worship a Triune God; believing, worshipping, and communicating with God the Father, God the Son, and God the Holy Spirit; and worshipping One God. “The grace of the Lord Jesus Christ and the love of God and the fellowship of the Holy Spirit be with you all.”
Heidelberg Catechism: Lord’s Day 8