The world's religion?

Spurgeon, "Hidden Manna" #980. Jer. 15:16

Blessed are they who go to their Lord outside
the camp, leaving the world's religion as well
as its sin,in obedience to that sacred call:

    "Therefore, come out from them
        and separate yourselves from them.
    Don't touch their filthy things,
        and I will welcome you.
    And I will be your Father,
        and you will be my sons and daughters,
        says the Lord Almighty."  2 Cor. 6:17-18