This is one of those: It”s so simple its almost self explanatory questions. It works like the sun in a way.
We see the light of the sun (which is christ) we feel the heat of the sun (which is the spirit) but with these 2 there is only one sun itself (the creator). Without the suns light we can not see if the sun is there but feel the heat from it. Without the heat of the sun we can only see the light but we do not feel it. Without the sun at all, neither the heat or light can even be provided.
That is the Holy Trinity – all three Father, Son, and Holy Ghost interconnected together but separate things- Coming from only one God, that is the source of the light of the world, and the warm feeling we get.