I keep thinking of Ezekiel 9 where God showed Ezekiel the Babylonian exile a vision of His temple filled with worshippers of Asherah and Tammuz.
That didn't happen overnight. Doubtless "open minded" priests explained that in the modern world they should be more inclusive and tolerant towards other faith traditions. Asherah, Yahweh. What's the difference ? It would be so judgemental to limit worship to just worshippers of God.
2 Corinthians 11:13-15 (King James Version)
13For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.
14And no marvel; for Satan himself is transformed into an angel of light.
15Therefore it is no great thing if his ministers also be transformed as the ministers of righteousness; whose end shall be according to their works.