Imagine a master with a very good servant- This servant is absolutely faithful and works diligently for his master. The master is very happy with his servant and loves him dearly.
One day he decides to offer his beloved servant the chance to become his adopted son. The servant must now consider this tremendous offer- should he accept it or not! What would you do in this situation?
Servants have different relationship with their masters than their sons: They have their quarters outside the house and they work for pay. They generally have no access to his positions- neither by right nor inheritance.
If the servant accepts the offer the whole relationship will be based not upon work, but in love! He will even inherit some portion of the father’s estate.
This illustration can be compared to a Muslim as opposed to a Christian. The Muslim has a WORK relationship with his master, Allah, whereas a Christian has a LOVE relationship to his Father, God.