A gospel which is only about the moment of conversion but does not extend to every moment of life in Christ is too small.
A gospel that gets your sins forgiven but offers no power for transformation is too small.
A gospel that isolates one of the benefits of union with Christ and ignores all the others is too small.
A gospel that must be measured by your own moral conduct, social conscience, or religious experience is too small.
A gospel that rearranges the components of your life but does not put you personally in the presence of God is too small.
The Deep Things of God: How the Trinity Changes Everything (Wheaton, IL: Crossway, 2010), 106
(HT: Of First Importance)