God takes care of His creation. Even simple creation like the birds of the air.
God takes care of their food and drink. God takes care of their life partners too.
While they still have to work to find food, drink and life partners, there is no need for them to worry.

My God takes care of them.
My God will take care of me too.
The birds never need to worry whom they 'marry'.
I shall not worry too with whom I will marry.