God the Father
God the Son
God the Holy Spirit
1. The sign of he Cross made on the forehead of the perso to be baptised - a symbol of belonging to Christ and the Christian Church.
2. Water - the sign of washing away former sin and a new start in life as a Christian
3. A lighted candle - symbolising Jesus, the Light of the world.
In some baptisms in the UK a recent additional symbol is sometimes used (especially if the baptised person is a baby). This is a white robe which is wrapped round the baby at a particular time of the service symbolising being wrapped in God's love.