The Jews introduced circumcision for the same reason as did the people they imitated the uperclass Egyptians. To set them apart from the rest of the people. It is like being branded. Very few people would be insane enough to mutilate their genitals and it was introduced into religion to force compliance.
It sealed God's covenant with him and signified that the covenant would include Abraham's progeny.
It was simply claimed that this was the instruction of God.
It is a part of our covenant with HaShem, the creator.
We are not told in the Bible about Circumcision and the Midianites. You might find something in Midianite history.
Circumcision is a good idea if the owner of the penis concerned has an inclination to not wash regularly.
Importance.
No environmental significance.
Importance
What is the importance of the level of significance of study findings in a quantitative research report
seriousness, importance, significance, urgency, severity, acuteness, solemnity, momentousnessseriousness, importance, significance, urgency, severity, acuteness, solemnity, momentousness
what is the significance of libraries?
Abrahams challenges were that he had to protect his kids.
The quality or condition of being important; significance.
Relevance, value, importance :)