Purpose Of Life
That was not my question at all. Both the slave and the Khalifa do ibadah (internal and external). It is the journey from being a slave to being a Khalifa that I am asking about. Quran uses both these terms with some reason and purpose
Of course every word in the Quran is important. However, every word must be understood in it’s context the way it was understood by the direct addressees of the Quran. We can’t simply take our own dictionary meanings and place them in the Quran. Also we can’t take unrelated verses of the Quran in order to infer our own philosophical ideas. What the word slave ( abd ) refers to in the Quran is explained very well in the videos I shared with you above. You did not share which verse you’re referring to in reference to khalifa , however I suspect that it’s verse 2:30 because that’s the most popular one. In that verse God is informing angles about His scheme for the humanity. It has nothing to do with a journey from being a slave to a khalifa as in your original question.