In words that might be addressed to so much of 21st century Western Evangelicalism, Ortlund Jr.comments on Old Testament Israel’s spiritual adultery as found in the book of Hosea,

The people failed to make meaningful connections between 
their theology, history and worship, on the one hand, and their 
real-life problems, on the other hand. They put God, his
 covenant, his power, his wisdom, into a limiting category of
 thought – they could not bring themselves really to believe the
 assurance of Deuteronomy 28:1-14 – while ‘the real world’ was 
another category altogether with its own rules and its own 
resources. They acted as though faith in Yahweh alone were an
 impracticable policy for life. As a result, they dishonoured him
 even as they thought they continued to honour him.

Moreover, unalloyed, classical Yahwism was losing its compelling power among the people. It was being redefined with fewer
 sharp edges and more open doors as a broadly inclusive
 religion, increasingly tolerant of elements of paganism.

(Ortlund Jr, Whoredom: God’s Unfaithful Wife in Biblical Theology, 48)