Which religious symbol was rarely used in its early faith tradition but became universally recognized after a strategic 'rebranding' in the 4th-5th centuries CE?

Throughout history, religious movements have embraced powerful symbols that transcend language barriers and connect believers across cultures. Some of these symbols began as simple marketing tools and evolved into globally recognized icons of faith. This trivia question explores one of the most successful examples of religious brand strategy that transformed a once-controversial symbol into a universal emblem of devotion.

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The Christian cross, which was largely avoided as a symbol for the first 300 years of Christianity due to its association with Roman execution
The Jewish menorah, which was primarily used only in temples until strategically promoted as a household item during the Babylonian exile
The Buddhist dharma wheel, which was limited to royal insignia until Emperor Ashoka's marketing campaign spread it throughout Asia
The Islamic crescent moon, which was originally a Byzantine symbol later adopted by Ottoman rulers as a political statement against Christian imagery