I Thessalonians 4:11-14

that you also aspire to lead a quiet life, to mind your own business, and to work with your own hands, as we commanded you, that you may walk properly toward those who are outside, and that you may lack nothing. But I do not want you to be ignorant, brethren, concerning those who have fallen asleep, lest you sorrow as others who have no hope. For if we believe that Jesus died and rose again, even so God will bring with Him those who sleep in Jesus.