@FBM,
As a small child I believed without hearing and seeing. Then, I became agnostic and began hearing, seeing, wrestling with the unseen and witnessing powers of the invisible spirit world. Evil spirits had come into my life as a consequence of my sin. And Father God and His Son Jesus both revealed themselves to me while reaching out for the salvation of my soul. Someday, I may post my testimony. Today, I believe because I have heard and seen.
John 20:29. Jesus said to him,
"Thomas, because you have seen Me, you have believed. Blessed are those who have not seen and yet have believed."