Good day! There are reasons why people cry. Maybe they are sad, upset, mad and even if they are happy. People cry when they are sad, upset and mad because this is how they can express what they really feel. It will even make them feel better if they cry. People cry when they are happy because they can't express how happy they are. some people even jump, kissed the one who's beside them and they even hug the person whose with them. This way, they can express what they really feel.
For your question, I cried because of happiness. I cried because I got my first job ever! I know God is Good and He's the one who made me get that job! We should believe with Him. It's just He want's us to approach Him and He will do the rest. God bless us all ^^