'World' in the Bible

whereby he hath granted unto us his precious and exceeding great promises; that through these ye may become partakers of the divine nature, having escaped from the corruption that is in that world by lust.

and spared not the ancient world, but preserved Noah with seven others, a preacher of righteousness, when he brought a flood upon the world of the ungodly;

For if, after they have escaped the defilements of the world through the knowledge of the Lord and Saviour Jesus Christ, they are again entangled therein and overcome, the last state is become worse with them than the first.

by which means the world that then was, being overflowed with water, perished: