Simeon uses a powerful word to describe his departure from life. It's not just death, but a release.
The word "depart" (apolyeis) here carries a rich meaning beyond simply leaving. It suggests being let go, released, or even set free.
A Slave's Enfranchisement
Think of it like a slave being granted freedom, or a soldier being relieved from duty. Simeon, an aging "servant" (doulos), feels his long service of waiting is over. God, his "Master" (Despotes), is now releasing him from his earthly post.
This isn't a passive resignation to death, but an active acknowledgment of God's fulfillment of His promise, granting him liberation from the ties of this life.