1 Thessalonians 4:14; 1 Thessalonians 4:17; 1 Thessalonians 5:10

14 For if we believe that Jesus died and rose again , even so them also which sleep in Jesus will God bring with him.
17 Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord.
10 Who died for us, that, whether we wake or sleep , we should live together with him.