What does the Bible say about past lives?
The Bible teaches one life, then the judgment, then resurrection. When asked whether a man was born blind because of sin, Jesus said no.
Hebrews says it is appointed for people to die once, and after this, judgment. Jesus promised the dying thief paradise that same day. And when his disciples assumed a man's blindness must be punishment for sin, Jesus rejected the idea.
27Inasmuch as it is appointed for men to die once, and after this, judgment,
Hebrews 9:27 (WEB) · context
43Jesus said to him, “Assuredly I tell you, today you will be with me in Paradise.”
Luke 23:43 (WEB) · context
1As he passed by, he saw a man blind from birth. 2His disciples asked him, “Rabbi, who sinned, this man or his parents, that he was born blind?” 3Jesus answered, “This man didn’t sin, nor did his parents, but that the works of God might be revealed in him.
John 9:1-3 (WEB) · context
42So also is the resurrection of the dead. The body is sown perishable; it is raised imperishable. 43It is sown in dishonor; it is raised in glory. It is sown in weakness; it is raised in power. 44It is sown a natural body; it is raised a spiritual body. There is a natural body and there is also a spiritual body.
1 Corinthians 15:42-44 (WEB) · context
Reason 4: One life, then the judgment: not endless past lives