(religion) eschatology (study of the end times)

deepen

end; finish

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

to research, to study

a piece of research, a study, investigation

to discuss / to censure, reproach

theory