The idea of "getting rich" as a sign of gods favor was probably started in modern USA by the Pentecostal and charismatic movements probably around the 50s. It

The idea of "getting rich" as a sign of gods favor was probably started in modern USA by the Pentecostal and charismatic movements probably around the 50s. It is called prosperity theology and Calvinists have been some of it's most notable opponents. Famous modern Calvinist preachers like Paul Washer and John Piper have made a name for themselves by criticizing prosperity theology. That said, even prosperity theology, as perverted as it is in my opinion, still sticks to basic Christian tenets like "blessed are the poor" and the importance of charity to the poor.