While the Western phoenix is Greco-Egyptian, similar "fire birds" appear globally:

That is the Phoenix. No meme. No mercy. Just the brutal, beautiful, lonely cycle of destruction and renewal.

Just fly.

In the Middle Ages and the Renaissance, the phoenix moved beyond mythology and into the realm of alchemy and Christian symbolism. For alchemists, the "Phoenix Stage" represented the final transformation of lead into gold—the Rubedo, or the "reddening." It symbolized the soul’s ultimate purification. Early Christians adopted the bird as a symbol of the Resurrection, seeing the three-day process of the bird’s rebirth as a direct parallel to the story of Christ. The Universal Truth of the Phoenix