There are several levels of response to your question - and the answer depends upon it’s interpretation and the individual who answers it.
My faith comes from a variety of sources, all of them by the Grace of God. I, also, like others who posted before me, have always known Jesus as Lord since I was a small child. I received this gift of faith *through *my parents and their example.
My awareness of the presence of Jesus Christ in my life has been most dramatic and tangible during Holy Communion. Uncontrollable tears of joy and gratitude prompted by the realization of my own pitiful unworthiness before Him while simultaneously He makes me aware that despite my failings He loves me and forgives me.
My intellectual belief comes most strongly from the witness of the Apostles and martyrs. It is hard to rationalize how an entire group of otherwise normal individuals not only become devout followers of Christ, but how, after his death, when history would predict that they would scatter and disappear, their lives are transformed by the reality of the Resurrection. They not only live a life transformed by Him, they accept death in many cruel forms - at the hands of others - rather than recant the reality of the risen Lord. Nothin’ beats a credible eyewitness testimony unrecanted (for no apparent gain), taken to the grave.
Phil