Got a little cheesy and anthropomorphic here, picturing God taking the pulse of the whole world of humanity – literally. LOL! But unlike going to the doctor who only has bandaids, so he only prescribes bandaids for every ailment, or the doc who gets a kickback for every prescription he writes for an expensive wonder drug, so it gets prescribed for everything….the Divine Physician sends a new prescription (new Manifestation of God every 500-1000 years or so with new social teachings and more advanced spiritual teachings) as the maturity, capacity, and development of humanity warrants. It’s not one size fits all ages of civilization. Well, here’s the quote that precipitated this painting:

The All-Knowing Physician hath His finger on the pulse of mankind. He perceiveth the disease, and prescribeth, in His unerring wisdom, the remedy. Every age hath its own problem, and every soul its particular aspiration. The remedy the world needeth in its present-day afflictions can never be the same as that which a subsequent age may require. Be anxiously concerned with the needs of the age ye live in, and centre your deliberations on its exigencies and requirements.
— Tabernacle of Unity