The Aramaic word n'kas means riches, goods, or treasure. It refers to material wealth and possessions, particularly accumulated property. The word appears in the Aramaic portions of the Old Testament in contexts dealing with the wealth of kingdoms and individuals under Babylonian and Persian rule.
In the book of Ezra, n'kas appears in the context of imperial decrees regarding the financing of temple reconstruction. The Persian king authorized the use of royal treasury funds for the rebuilding of God's house. Theologically, this demonstrates God's sovereignty over the wealth of nations — He moves the hearts of pagan kings to fund His purposes. The concept reminds believers that all material wealth ultimately belongs to God and serves His kingdom purposes, even when held in the hands of worldly powers.