bless

bless /ˈblɛs/ verb
blesses; blessed /ˈblɛst/ ; blessing
bless
/ˈblɛs/
verb
blesses; blessed /ˈblɛst/ ; blessing
Britannica Dictionary definition of BLESS
[+ object]
1 
: to make (something or someone) holy by saying a special prayer
2 
: to ask God to care for and protect (someone or something)
3 
a  — used in the phrase God bless to express good wishes or appreciation for someone or something
— see also god bless you (below)
b  — used in phrases like bless his/her heart and bless him/her to express affection, appreciation, or understanding
— see also bless you (below)
4 
: to provide (a person, place, etc.) with something good or desirable
— usually used as (be) blessed
5 
: to give approval to (something)

bless my soul

old-fashioned
— used in speech to express surprise

bless you

or God bless you
1 
— used in speech to express thanks or good wishes
2 
— said to someone who has just sneezed