QUESTION: Fix punctuation: Just BELIEVE on the Lord Jesus Christ and thou shalt be saved is the popular teaching today
ANS: Just "BELIEVE on the Lord Jesus Christ, and thou shalt be saved" is the popular teaching today.

QUESTION: Fix punctuation: 26 All the cities were ten and their suburbs for the families of the children of Kohath that remained
ANS: 26 All the cities were ten and their suburbs, for the families of the children of Kohath that remained.

QUESTION: Fix punctuation: Here is our selection of just a few of our Apartments in Born
ANS: Here is our selection of just a few of our Apartments in Born.

QUESTION: Fix punctuation: eventually involved with work on ultraviolet light and the development of the means to measure metal fatigue
ANS:
.... eventually involved with work on ultraviolet light and the development of the means to measure metal fatigue.