John Donne poetry???

[myk]

can someone tell me how to find connecting themes (or key concerns) in various pieces of poetry by the same author (John Donne). preferably by tomorow. any help is appreciated. thanks

these are the poems;
(i) valediction forbidding mourning
(ii) hymn to God, my God in my sickness
(iii) The Good Morrow
(iv) Death be not proud