The latest book by ES Williams was published in October 2017. This short book sets out to evaluate Piper’s ministry in the light of biblical truth. We see how Piper amends the shorter Westminster Catechism to say that the chief end of man is to glorify God by enjoying Him forever. We see how Piper creates a new commandment, ‘Delight yourself in the Lord’, from Psalm 37.4, and then tells Christians that the vocation of their life is to seek maximum pleasure in God. We hear how Piper extols the worldly worship of a Passion Conference. We note how Piper cleverly digs up Scripture to find a ‘happy God’. The book provides clear evidence that antinomianism is the underlying error upon which Christian Hedonism is built.