From John Piper’s Brothers, We Are Not Professionals:

A broken, leaping heart will love like Jesus. And the power of the love will be proportionate to the felt fearfulness of our nearness to destruction. The keener the memory of our awful rescue, the more naturally we pity those in a similar plight. The more deeply we feel how undeserved and free was the grace that plucked us from the flames, the freer will be our benevolence to sinners.