Fate, Destiny & the Allotted Lot
Each life came with a 'lot' the gods had fixed — yet a decree, unlike blind fate, can be read in advance and begged to change.
Also: fate · destiny · shimtu · šīmtu · namtar · the allotted lot · fixing of fates · decree of the gods
Mesopotamians believed each person and thing received a 'destiny' (shimtu) — a lot decreed by the gods that shaped one's character, station, and the day of one's death. To 'go to one's fate' was an idiom for dying. Yet destiny was not blind fate: it was a decree, issued by gods who could in principle confirm, postpone, or alter it, and which the diviner might read in advance and the worshipper might plead to change. This tension — between a fixed allotment and a divine decree open to appeal — runs through the whole of Mesopotamian piety, divination, and prayer.
In short
The concept of shimtu — the destiny or 'lot' decreed for each person and thing by the gods, including the appointed time of death — neither wholly fixed nor freely escapable.
Where it’s found
The decreeing of fates across the Sumerian corpus (e.g. 'Enki and the world order', ETCSL 1.1.3, in corpus); the šīmtu concept in Akkadian wisdom and myth (akkadian-pending)
How the idea developed across Sumer, Babylon & Assyria
The Sumerian 'fixing of fates' (nam-tar) by the divine assembly underlies the Akkadian šīmtu; the related figure Namtar ('fate') is also a netherworld god/demon. The balance between fixed lot and appealable decree is what makes both divination and petitionary prayer meaningful.