Firstly, what father is, it can be better explained by the story which is known as "The Tree and A Boy" which is narrated as follows:
-- A long time ago, there was a huge apple tree. A little boy loved to come and play around it every day. He climbed to the treetop, ate the apples and took a nap under the shadow. He loved the tree and the tree loved to play with him. Time went by. The little boy had grown up and he no longer played around the tree every day.
One day the boy came back to the tree and he looked sad. 'Come and play with me", the tree asked the boy.
“I am no longer a kid. I do not play around trees anymore," the boy replied.
"I want toys. I need money to buy them."
'Sorry….but I do not have money, but you can pick all my apples and sell them. So, you will have money."
The boy was so excited. He grabbed all the apples on the tree and left happily. The boy never came back after he picked the apples.
The tree was sad.
One day the boy who now turned into a man returned and the tree was excited.
'Come and play with me' the tree said.
“I do not have time to play. I have to work for my family. We need a house for shelter. Can you help me?'
'Sorry…. but I do not have any house. But you can chop off my branches to build your house."
'So the man cut all the branches of the tree and left happily. The tree was glad to see him happy but the man never came back since then. The tree was again lonely and sad.
One hot summer day, the man returned and the tree was delighted.
'Come and play with me!' the tree said.
I am getting old. I want to go sailing to relax, can you give me a boat?' said the man.
"Use my trunk to build your boat. You can sail far away and be happy."
So the man cut the tree trunk to make a boat. He went sailing and never showed up for a long time.
Finally, the man returned after many years. 'Sorry, my boy. But I do not have anything for you anymore. No more apples for you', the tree said.
“No problem, I do not have any teeth to bite' the man replied.
'No more trunk for you to climb on." 'I am too old for that now." The man said.
"I really cannot give you anything, the only thing left is my dying roots,' the tree said with tears.
“I do not need much now, just a place to rest. I am tired after all these years,' the man replied.
'Good! Old tree roots are the best place to lean on and rest come to sit down with me and rest.' The man sat down and the tree was glad and smiled with tears.--
This is what like Fathers are, not all but most of the times, I narrated this story to make you realize what it is like to be a real Father who is Adam(in Christian, Islam and Judaism mythology) for our Existence also known as Ask(in Norse mythology) or Malakas(in Philippine mythology) or Mashya(in Zoroastrian mythology) , initially we don't understand the concept of Father/Mother until we don't become a One, being Father(Adam) of all Human Kind(Son/s) you are given the responsibility of Guru Karma of being, for which you can't be partial to any of your Son because you are like that tree to both of that Son, but I believe Love, Belief, and Faith are key ingredient to get success, which was proven by The Jesus just like Abel and being dearest to the Father among all of the others.
Now, The Holy Spirit, who is also known with the name/s Iblis, Shiv, Jinn, and Satan, because of his disobeying to God, which is depicted in our Religious treatise but I believe he did it by the will of His/our God to maintain the balance between Good and Bad, He is given the God-image in some religion and referred to Shiv when we see him with Respect but also referred to Satan in other when we see him as misguided to our Father Adam, he is related to Yang nature of existence if Adam is related to Yin nature and which can't be pursued without the will of God. He is the representation of Power in our Existence and for acquiring that kind of power we take good and bad steps and whatever will be the consequences, if it is rewarding then the Holy-Spirit is Good and referred as God or if it is unproductive then He is Bad and referred as Satan. It is our deed which we impose on others with the good or bad name. He is the largest Sentinel of Heaven and God granted him the authority over a group of angels(including Guru Adi-shakti and all Maya directing Guru Vishnu, Shankara & Brahma ), or their offspring combinedly known as AUM, to tempt humans to sin and punish them, and by this way, he is depicted with the bad perception and referred with bad names, but he is just doing his Duty and following God will. To relate better between Shiv and Satan, Vasuki or Serpent is the Key which is most dear to him and who lured Adam and Eve.
Finally, who is God, I explained it earlier but in short, he is medium to both and including the deepest feeling to both i.e. Adam and Shiv, He can be the intense Adam or Shiv depending on the Belief, Faith, and Devotion of any Entity.