By the issue of baptism, this is a question that poses a threat to us. Personally, we have to be curious about what will happen.
Is it biblical? Does the Bible support it?
Or we have to examine the scriptures to see what is happening. When we talk about baptism, it is a decree of our Lord Jesus Christ.
In Matthew 28:19,
Go ye therefore and teach all nations about baptizing them in the name of the Father, the Son, and the Holy Spirit.
When I was presenting in the Bible where there were believers who were baptized again,
in Acts 19:35, four encountered Christians in the book of Acts who had only been baptized by John.
Ephesians 4:5 indicates that there is one Lord, one faith, one baptism. This makes us remember that we do not repeat common baptism in order to become true Christians. Conclusively, it does not require to be baptized twice in the Bible.
However, in case that when we encounter this first baptism, it has not been founded on actual faiths. What is the most important thing here? Which is to get repented, to true faith and submission to the word of God. In that opinion, it is the duty of the heart to be correct in front of Him.
God bless His word as we listen to it.