“Then spake the Lord to Paul in the night by a vision, Be not afraid, but speak, and hold not thy peace: for I am with thee, and no man shall set on thee to hurt thee: for I have much people in this city.”
‭‭Acts‬ ‭18‬:‭9‬-‭10‬

There are much people in the city, but they are in darkness and the only thing that will provoke them to migrate out of that darkness is your light that shines:
“And the Gentiles shall come to thy light, and kings to the brightness of thy rising.” ‭‭Isaiah‬ ‭60‬:‭3‬
Never mind the noise the rulers of the darkness of the world would try to make to distract or deter you from delivering those they have held captive, always remember- you are far above them:
“and hath raised us up together, and made us sit together in heavenly places in Christ Jesus:” ‭‭Ephesians‬ ‭2‬:‭6‬ | Ephesians 1:20-22
They are not a factor because they have been rendered absolutely powerless:
“…He Himself in a similar manner also shared in the same [physical nature, but without sin], so that through [experiencing] death He might make powerless (ineffective, impotent) him who had the power of death—that is, the devil—” Hebrews‬ ‭2‬:‭14‬ ‭Amplified Bible
So don’t let fallen and wasted devils inhibit your mission- don’t hold your peace!

Bible Reading Plan: Pslam 111 and 112