Genesis 1:26
ESV - 26 Then God said, "Let us make man in our image, after our likeness. And let them have dominion over the fish of the sea and over the birds of the heavens and over the livestock and over all the earth and over every creeping thing that creeps on the earth.
For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.
Because God the Father, God the Son, God the Holy Spirit was always around even from the beginning of time
My hypothesis is that just like words, it depends on context. Father=domination, ruler, head; Son=compassion, sacrifice, healer; Holy Ghost/Spirit=foresight, wisdom, passion. Just to give an idea.
Let God Be Magnified!
Trinity: I am mother to my children, daughter to my mother, and sister to my brothers and sisters. But, yet, only one person.
I am also, teacher to my Sunday school class (and family and friends, being an example of Christ at all times), I am a team player with my co-workers, a leader to the teenage women who look to me for guidance, an image of a God fearing, Woman of God, for my son. I am who I am depending on the role I am in at the moment and with whom. All the while, maintaining a life of righteousness and mercy, obtained only through the knowledge of Grace shown unto my through Christ sacrifice for my sins.
This is why Christ said in Exodus 3:14 "I Am That I Am" and can proclaim to be all things to ALL PEOPLE, because He TRULY IS WHO AND WHAT WE NEED. He is a Father to the fatherless, a counselor to the weary, He is Peace in Chaos, He is Shelter in a Storm, etc.
"MY GOD IS ALL THAT AND A BAG OF CHIPS"!!!!! and HE IS GOD ALL BY HIMSELF!