The ankh is one of the oldest symbols in use, used by the ancient Egyptians to represent life and living, the essence of existing. It stood for consciousness, well-being and simply being, as opposed to not being. The ankh was the symbol for energy and vitality in this life, and the revival and continuity in the hereafter. James P. Allen (2000) confirms that all these meanings were not just arbitrarily added to the icon, bu that in fact, the ankh was the hieroglyph standing for the sequence ‘-n-ḫ. These consonants were indeed found in the verb meaning “live”, the noun meaning “life”, and words derived from them, such as s’nḫ, which means “cause to live” or “nourish”. The original connection between the ankh’s image and this hieroglyphic meaning is still shrouded in mystery and debated by scholars. An accepted opinion is that the ankh originally represented a knot formed of cloth or reeds. American Egyptologist Henry G. Fischer regarded these earliest ankh signs as knots that were used as amulets rather than for any practical purpose.
In conclusion to its hieroglyphic meaning, wherever the ankh was written, it stood for life. The Mortuary Temple of Hatshepsut for example, features lots of ankh hieroglyphs on its walls, relief sculptures and friezes. The temple is situated near the Pharaonic tombs of the Valley of Kings and adjacent to the tomb of Mentuhotep II, making the appearance of the ankh signs all the more logical. The ankh however, was not limited to merely a hieroglyph of the Egyptian language. It grew rapidly into one of the most used symbols in Egyptian belief across the realm. For the ancient Egyptians, life was an actual force to which every living being and every natural occurrence was connected to, from the rising of the sun to the birth of a child. Sustaining and giving life was therefore a central function of the deities who controlled these concepts. Therefore, the ankh was often depicted being held in gods’s hands, representing their life-giving power.
On the temple built by the Pharaoh Ramses II in Abydos circa 1275 BC, he is pictured receiving the gift of life from the gods, Horus in this case. This imagery symbolizes his birth, but because he represented the entire nation as a Pharaoh, also the grant of life by the gods to the entirety of Egypt. Lastly, the depiction of him receiving life by Horus is an expression of hope for his fate in the hereafter. To die and to live again, eternally dwelling on the fields of Aaru. That’s the same reason why several papyrus scrolls, like the papyrus of Ani or the papyrus of Hunefer, depict respectively the gods Horus and Anubis guiding the dead while holding an ankh in their left hand. It symbolizes the proces of resurrection, the journey away from this realm towards revival in the afterlife.
Although early examples of the ankh sign date to the First Dynasty (c. 3000 BC), ankh-shaped amulets only first appeared in the late Old Kingdom (2nd millennium) and continued to be used into the late first millennium BC. They were meant to impart to the wearer the qualities of life and vitality. The Egyptians wore them in daily life and also placed them in tombs to ensure the well-being of the deceased. Despite the importance of the symbol and its abundant occurrence in art and architecture, ankh-shaped amulets were rather rare.
The ankh lived on after the introduction of Christianity in Egypt throughout the first century AD. The earliest Egyptian Christians found the ankh signs to resemble the already existing Staurogram symbol, a monogram for Christ on the cross. Indeed, the oldest Coptic crosses where influenced by the ankh symbol. This type of cross is called crux ansata (handled cross). The cross appears in several early Coptic manuscripts, as early as the 3rd century AD. The 4th or 5th century Codex Glazier for example, a manuscript of the New Testament in the Coptic language, ends with the picture of a crux ansata. It also regularly appeared on tapestry and painted on church walls. In terms of developing iconography, the crux ansata was an accepted Christian symbol from at least the early fourth century.
The resemblance of the ankh with the Staurogram was not the only reason the Coptic community adapted it as their cross. When they learned from indigenous Egyptian pagans hat the ankh symbolized life and vitality in the old religion, they made it their crux ansata, representing both Jesus and life. After all, in Christian belief Jesus was resurrected, healed others and abolished death itself, making the crux ansata an appropriate symbol in the Coptic mindset.
Some examples featuring the ankh/crux ansata:
For more examples, please visit this thread on my Twitter.