Here is a "blue stone" verse to increase even the feeblest faith. Jesus Himself saying: "... that ye may know ..." He longs for us to be really sure. To know. In this account He is speaking to the man brought to Him "sick of the palsy, lying on a bed." It worked for him. It will work for us.
Jesus said to him, ".... Son be of good cheer; thy sins be forgiven thee." Then, with strong, gentle reassurance, He said "... that ye may know that the Son of man hath power on earth to forgive sins ... Arise, take up thy bed, and go into thine house."
Jesus says to us: "... be of good cheer; thy sins be forgiven thee." And when He sees our shifting faith even after His forgiveness. He gives us a practical suggestion which we ourselves can try. Even though He is the Son of God, He understands us so well, that he gives us something we can do to prove His power to forgive. Something we ourselves to do to prove that we have been given a new life. That we have been healed. "... Arise, take up thy bed, and go into thine house."
Whatever that thing is which symbolizes your doubt and fear, grasp it with both hands. Try it. "... Take up thy bed and walk."
"And he arose and departed into his house." When the sick man did this, he knew he had been healed. Try Him, however timidly. "If I may but touch his garment, I shall be whole." Touch Him now and know.
"... and as many as touched (him) were made perfectly whole."