After our First Holy Communion, which was on Pentecost Sunday, we learned about Trinity Sunday. This is the first Sunday after Pentecost. To help us understand the Holy Trinity, we talked about an egg which is made of three parts – the shell, the yolk and the white. Yet it’s all just one egg. The Holy Trinity is like this because it also has three parts – God the Father, the Son and the Holy Spirit. Yet there’s only one God. We know that we talk about the Trinity every time we pray when we make the Sign of the Cross.