This gospel is summarized for us in the oldest of our church’s confessions – the three Ecumenical Creeds. A “creed” is something that someone or some group believes, and “ecumenical” means worldwide. Any Christian can and should believe what these three creeds – the Apostles Creed, the Nicene Creed, and the Athanasian Creed – teach. You can find all three creeds here.
The oldest creed is the Apostles. It’s so old we don’t know exactly how old it is but find it used at baptisms in Rome a couple centuries after Jesus’s resurrection. We still use the Apostles Creed at baptisms and many Sundays throughout the year. It teaches the basics of who God is – Father, Son, and Holy Spirit – and what He has done and does to create us, to redeem us, and to make us holy so that we can live with Him forever.
The second-oldest creed is the Nicene Creed, which resolved disagreements in the church about who Jesus is and who the Holy Spirit is. It is about 1,700 years old, and we say it most Sundays and festival days at Trinity. It teaches very clearly that Jesus Christ is true God and true man and that the Holy Spirit is not some kind of power or force but the Third Person of the Holy Trinity and the One who makes us spiritually alive through the gospel.
The newest creed is the Athanasian Creed; it’s only 1,400 years old. It was written against people who believed that Jesus was not truly God in the same way His Father is – a group then called Arians but similar to modern-day Jehovah’s Witnesses or Mormons. We say this creed once a year on Trinity Sunday in early summer because it teaches us clearly who Jesus is, what He’s done for our salvation, and what we must believe to have eternal life.