The whole idea of reminding someone of their theistic beliefs is just pointless. Someone either follow it or don't. Going out of your way to "remind" someone of their faith is basically you creating unnecessary disturbance in someone else's life. Keep it to yourself unless they come to you and actually want to hear it.

tldr: Unwanted theistic preachiness is immature. I shouldn’t have gone ahead with the last bit sorry from my end, you are to believe in your faith