"And Elijah came to all the people, and said, 'How long will you falter between two opinions? If the LORD is God, follow Him; but if Baal, follow him. . . . ' "
I like this perspective, put out by Elijah. Even today this principle applies. All people worship some deity (alleged, or true). "Let the best [God] win," as the saying goes. Is the Muslim god the true one? Then all should worship him (or it). Is the atheists' god the true one? Then we should bow down to it. Is the secularists' god true? Let all men honor it (or her, or whatever). Is the God of the True Christian Religion the only Real Deity? Then, let all men worship Him.
It turns out that the Holy Trinity *is* the one and only God. We know this--among other reasons--primarily by the resurrection of the Son of God, who lives and reigns today. He can withstand all pretenders to His throne. Worship Him, and do not fear fake gods.
[Puritan quote of the day: "There are the greatest reasons in the world to be a Christian . . . " --Richard Sibbes, in "Glorious Freedom"]