“When Christians confront people on the basis of presuppositions not shared by the people they confront, they come across as rude (hence unloving, I Cor. 13:4-5) and usually render the gospel less credible to the people they confront. What is not generally communicated to the people being evangelized is the one thing we are called to communicate: namely, sacrificial, Calvary-quality love modeled after Jesus.”
Boyd, Gregory A., The Myth of a Christian Nation: How the Quest for Political Power is Destroying the Church (p. 157). Zondervan.