“The idolatry of Christian same-sex marriage advocates takes two general forms. The first group still recognizes the authority of God’s work, or at least still believes in the general concept of “sin.” They will freely admit that, like other types of fornication, same-gender sex is forbidden in the Bible, and even excluded by Jesus’ clear and concise definition of marriage. Yet despite this understanding they still choose to embrace same-sex marriage because they have made an idol of American libertarian freedom. They have replaced Jesus’ commandment—”You shall love your neighbor as yourself”—with the guiding motto of the neopagan religion of Wicca, “Do what you will, so long as it harms none.”
“In endorsing laws based solely on the secular liberal-libertarian conception of freedom (at least those that produce no obvious self-harm), they are doing the very opposite of what Jesus called them to do: They are hating their neighbors, including their gay and lesbian neighbors. You do not love your neighbor by encouraging them to engage in actions that invoke God’s wrath (Psalm 5:4-5; Romans 1:18). As Christians we may be required to tolerate ungodly behavior, but the moment we begin to endorse the same then we too have become suppressers of the truth. You cannot love your neighbor and want to see them excluded from the kingdom of Christ (Eph. 5:5).
“The second group has completely rejected the authority of Scripture and embraced the idol of open theism, a god who changes his mind over time. Not surprisingly, this god seems to change his mind in ways that comport exactly with the secular morality of twenty-first century America. A prime example of this embrace of a progressive, open deity is found in a comment by former evangelical pastor Rob Bell. . . .”
(Joe Carter, “When Did Idolatry Become Compatible with Christianity?” , The Gospel Coalition)