In Matthew 18:3-4, Jesus said, “Truly I say to you, unless you are converted and become like children, you will not enter the kingdom of heaven. Whoever then humbles himself as this child, he is the greatest in the kingdom of heaven.”
I recently witness the faith of a child. My four-year-old grandson contracted a skin rash from an unknown source. It covered much of his body and it itched. I called him to tell him that I was praying for him, and he said “God healed me.” Although the rash actually remained for another day or so, the itching had subsided, and he knew that God had healed him, in spite of still seeing the rash on his skin. Faith is believing without seeing.