Typically a number of analogies are offered to help us understand this Doctrine. The sun, sunlight, and its heat. 2 - An egg. There are three leaves that are unique and distinct while the three still make up one clover. 4 - Water can exist in 3 phases, solid, liquid and steam.
Ice is water.
Steam is water. All of these analogies fall short at one point or another. Lets see how. God would be like the the Sun, the heat would be like the Holy Spirit, and the sunlight would be the Son. All these three help make up the sun.