Mother (read between the lines)
Prior to this post, I couldn't think of anything more impersonal and insincere than borrowed work - but once again I believe I was wrong.
...at the same time God, who is airborne and appears against ovoid drapery, is contrasted with earthbound Adam, lying on a stable triangle of barren ground.
The inspiration for Michelangelo's treatment of the subject may come from a medieval hymn called Veni, Creator Spiritus, which asks the 'finger of the paternal right hand' (digitus paternae dexterae) to give the faithful speech, love and strength.
Adam's index finger, the most famous in Western art alongside God's, is in fact not the work of Michelangelo. It was damaged beyond repair by a crack that appeared in the ceiling in the mid-16th century and was repainted by a papal restorer.
(Ctrl+C & Ctrl+V from Wikipedia - The Creation of Adam)