Yes, Greek and Roman mythology predates Christianity. Greek mythology has its roots in the 2nd millennium BCE, with the earliest written records dating back to the 8th century BCE. Roman mythology, which was heavily influenced by Greek mythology, began to develop around the 8th century BCE as well.
Christianity, on the other hand, emerged much later. It began in the 1st century CE, following the teachings of Jesus Christ. This means that Greek and Roman mythology existed for centuries before the advent of Christianity.
Both Greek and Roman mythologies were integral to the cultures of ancient Greece and Rome, influencing their art, literature, and daily life. These mythologies included a pantheon of gods and goddesses, each associated with different aspects of life and nature. In contrast, Christianity is a monotheistic religion centered around the worship of one God.
In summary, Greek and Roman mythology formed long before Christianity, with their rich traditions and stories shaping the cultural and religious landscape of the ancient world.