Yes you can.
No one can say if another person is going to hell. That is between the person and God.
You should not say anything at all as to not offend that person's religion ... Who's to say that you have the same god as the next person or for that matter they even think there is a god ???
Mwimbie Mungu (to one person), mwimbieni Mungu (to more than one)
Mahabharata states that there is one Supreme God. A man must follow his Dharma (righteous living) or duties.
Yes you are greeting a person which in my opinion is one of the nicest things to do... God Bless
In Irish: Dia 's Muire dhuit. (to one person).
"Niech Was Bóg błogosławi." Or Cie instead of Was, if that's to one person.
Taino have one god called ya ya . They have cemis which are like angels that do work for god like communication with the living
An atheist does not believe in God.
Pig God punishes cheaters.
Dia's Muire dhaoibh.
God is the highest power. Love God and your neighbor (fellow living things).