It never made sense to me that someone would not believe after seeing a loved one return and tell them what happens after death, seems more truthful to say some would believe, others would not and would dismiss it as demons or some trick. Would be funny if Martha and Mary had rushed off screaming ‘Demon, demon’” when saw Lazarus coming out of the tomb.
Instead this story contradicts the other assertion that none would believe, even if someone returned from the dead.

Lazarus Raised from the Dead

John 11:38 Then Jesus, again groaning in Himself, came to the tomb. It was a cave, and a stone lay against it. 39 Jesus said, “Take away the stone.”

Martha, the sister of him who was dead, said to Him, “Lord, by this time there is a stench, for he has been dead four days.”

40 Jesus said to her, “Did I not say to you that if you would believe you would see the glory of God?” 41 Then they took away the stone from the place where the dead man was lying. And Jesus lifted up His eyes and said, “Father, I thank You that You have heard Me. 42 And I know that You always hear Me, but because of the people who are standing by I said this, that they may believe that You sent Me.” 43 Now when He had said these things, He cried with a loud voice, “Lazarus, come forth!” 44 And he who had died came out bound hand and foot with graveclothes, and his face was wrapped with a cloth. Jesus said to them, “Loose him, and let him go.”