There is a good thing about doubt – it allows God to reveal the Truth to us.
Now in the fourth watch of the night Jesus went to them, walking on the sea. And when the disciples saw Him walking on the sea, they were troubled, saying, “It is a ghost!” And they cried out for fear. But immediately Jesus spoke to them, saying, “Be of good cheer! It is I; do not be afraid.” And Peter answered Him and said, “Lord, if it is You, command me to come to You on the water.” So He said, “Come.” And when Peter had come down out of the boat, he walked on the water to go to Jesus. But when he saw that the wind was boisterous, he was afraid; and beginning to sink he cried out, saying, “Lord, save me!” And immediately Jesus stretched out His hand and caught him, and said to him, “O you of little faith, why did you doubt?” And when they got into the boat, the wind ceased. Then those who were in the boat came and worshiped Him, saying, “Truly You are the Son of God.” (Matthew 14:25-33 NKJV)
The storm came and the waters raged. Christ was no where to be found. They began to doubt, to feel fear.
Peter full of faith stepped out unto the water and began to walk to Christ, but his doubt returned! Through this doubt, the truth of who this Jesus was came into full view (at least for a moment). He was the Son the God!
Now it was the Feast of Dedication in Jerusalem, and it was winter. And Jesus walked in the temple, in Solomon’s porch. Then the Jews surrounded Him and said to Him, “How long do You keep us in doubt? If You are the Christ, tell us plainly.” Jesus answered them, “I told you, and you do not believe. The works that I do in My Father’s name, they bear witness of Me. But you do not believe, because you are not of My sheep, as I said to you. My sheep hear My voice, and I know them, and they follow Me. And I give them eternal life, and they shall never perish; neither shall anyone snatch them out of My hand. My Father, who has given them to Me, is greater than all; and no one is able to snatch them out of My Father’s hand. I and My Father are one.” (John 10:22-30 NKJV)
The people around Christ doubted that He was indeed the Messiah. This doubt allowed Christ to tell them exactly who He was.
Now Thomas, called the Twin, one of the twelve, was not with them when Jesus came. The other disciples therefore said to him, “We have seen the Lord.”
So he said to them, “Unless I see in His hands the print of the nails, and put my finger into the print of the nails, and put my hand into His side, I will not believe.” And after eight days His disciples were again inside, and Thomas with them. Jesus came, the doors being shut, and stood in the midst, and said, “Peace to you!” Then He said to Thomas, “Reach your finger here, and look at My hands; and reach your hand here, and put it into My side. Do not be unbelieving, but believing.” And Thomas answered and said to Him, “My Lord and my God!” Jesus said to him, “Thomas, because you have seen Me, you have believed. Blessed are those who have not seen and yet have believed.” (John 20:24-29 NKJV)
And Thomas, the Doubter, had not been seen since they arrest Christ in the Garden, but the other disciples went and found their fair weather companion. He refused to believe such nonsense and held doubt concerning the sanity of his compatriots.
Buy look what was revealed!
Sometimes, a divine doubt will allow God to work something where boldness might prevent Him. It is not up to us to cast dispersions on others for their doubt, for doubt is every bit a part of faith as belief is.