There are no certainties I know of in life except for God.

It is not His existence which is uncertain but our beliefs about Him that is.

Does He exist? Is He against or for us? Is He watching over us?

It is our fickle yes and no that contributes to our insecurity in this life.

Any better place to invest our faith and hope other than the Lord?

so i say to the non-religious that you may not believe in a god, but do not stop believing in the possible immensity of Love.

To be nobody but yourself in a world which is doing its best night
and day to make you like everybody else means to fight the hardest
battle any human being can fight and never stop fighting.

-- E. E. Cummings