What should I say or do?
You should say what you know about God in your life, what has
God brought in your life.
To these kind of questions only our own testimony could give it
a counterpunch. But of course the other party may decide not
believe your own testimony on God but if that person is your friend
he or she most likely will believe you since you are his or her
friend and that he or she knows you personally not to be the type
to fabricate such lies.
If the other party still refuses to believe your testimony the
only chance you have is to spend time with him or her so that he or
she could be a witness to your testimony that you had given
him.
That's why it is imporant for Christians not only to believe in
God but to experience God and to have the personal knowledge of God
in his or her own life. Afterall Christians are called the children
of God. What children that don't know their father?
God is the living God so it's not a question of if but it's a
question of when we will experience God fisthand in our life. Just
be true to yourself and to your faith.
There are theologians that do not believe in God and moralist
who are not moral as well as Christians who do not know their God.
If you think God hasn't come into your life reflect back into your
own life and invite Him over again.
Our testimonies may not have to be dramatic such as God healed
me of my cancer which the doctor had given up on me. Things like
since putting faith in Christ I feel a peace that I had never felt
before will do and will show just as good. Anyway all the people
that experience God first hand agree that God is wonderful
and miraculous. That He is great like no other. Tell or even show
that person this!