From the Church of England web site
Belief in God as Father, Son and Holy Spirit is at the heart of our faith. Christians believe that Jesus is God’s Son. Jesus reveals to us that God is our Father, and that God is available to us through the Holy Spirit.
The Christian faith is not a human invention. There are signs of God’s existence and handiwork in creation for anyone to read (Acts 14.15–17). But we believe in the way we do because God has come to seek us out and has made himself known to us. God has revealed himself through the Bible. God has revealed himself most clearly through the gift of his Son, Jesus Christ. God makes himself known personally to each believer through the work of the Holy Spirit.
'The most important decision any person can ever make is to become a disciple of Jesus Christ. It’s the best thing anyone can do.' Archbishop Justin Welby
Being a Christian means responding to Jesus' invitation to enjoy a relationship with God here on earth and for eternity.
'Long ago God spoke to our ancestors in many and various ways by the prophets, but in these last days he has spoken to us by a Son, whom he appointed heir of all things, through whom he also created the worlds. He is the reflection of God’s glory and the exact imprint of God’s very being, and he sustains all things by his powerful word.' Hebrews 1.1–3
The Apostles' Creed
I believe in God, the Father almighty,
creator of heaven and earth.
I believe in Jesus Christ, his only Son, our Lord,
who was conceived by the Holy Spirit,
born of the Virgin Mary,
suffered under Pontius Pilate,
was crucified, died, and was buried;
he descended to the dead.
On the third day he rose again;
he ascended into heaven,
he is seated at the right hand of the Father,
and he will come to judge the living and the dead.
I believe in the Holy Spirit,
the holy catholic Church,
the communion of saints,
the forgiveness of sins,
the resurrection of the body,
and the life everlasting.