"The lostness of the lost." What a phrase, coined by Dr Francis A Schaeffer. The lostness of the lost! That all those without Christ are lost is one thing; but that neither they, nor we, realise just how awful that lostness is, is appalling. Being lost and not knowing it. Preachers preaching about 'lost sinners' with these dreadful words simply dropping off the end of their tongues, is an indictment on all of us. Being overly familiar with the terms of the Gospel will condemn us on the last Day. The lostness of the lost.
Think about what this term entails; reflect on what its implications; allow the momentousness of this reality to grip our souls. Then go out and preach the Gospel to every creature.