Grace means there is nothing we can do to make God love us more—no
amount of spiritual calisthenics and renunciations, no amount of
knowledge gained from seminaries and divinity schools, no amount of
crusading on behalf of righteous causes. And grace means there is
nothing we can do to make God love us less—no amount of racism or pride
or pornography or adultery or even murder. Grace means that God already
loves us as much as an infinite God can possibly love.
---Philip Yancey from What's So
Amazing About Grace?