Jeremiah 13:25
This is thy lot, the portion of thy measures from me, saith the LORD; because thou hast forgotten me, and trusted in falsehood. This is thy lot, the portion of thy measures from me, saith the LORD; because thou hast forgotten me, and trusted in falsehood.
The allotted share and measured portion are assigned by the Lord Himself as the consequence of forgetting Him and trusting in falsehood. Forgetting Him means turning from truth after light and conviction have been given, and trusting in falsehood means rejecting that light and conviction to take up human teachings in place of truth. That turning includes following human leaders, and when conviction is refused the light fades while error comes in to take its place. The resulting darkness and scattering are the people's own allotted consequence, the judgment appointed for that course.