The Old Covenant is in many ways, but not in all, more elementary than the New. Therefore, we encounter more lists, more ceremony, and more regulations to restrain immature conduct.
The New Covenant is developed more along the lines of mature, abstract principles. By its nature it is a more “grown up” revelation (Heb. 5:12-14; 6:1-3; Gal. 3:21-4:7; Eph. 4:13-16).
Nevertheless, it is not the case that the principles of the New Covenant do not allow for inferences both concrete and abstract. Mature thought is expected. Such thought allows Christians to draw conclusions that lead to well-developed, specific actions.
As with the human growth process, there comes a time when warnings about playing in the street would be rather ridiculous. That time does not, however, give less shape to life. Maturity carries with it much more responsibility.
For my friends who are eager to move away from rules. Please remember adults have lives of greater definition than do children The Bible does not need to provide lists to present truths that can be listed.