Churches of Christ generally hold to a very strict view on this issue: not only do they permit it only in limited cases, they require that a married person who was divorced prior to the current marriage must divorce the current spouse and return to the former spouse if s/he is alive, or agree to remain unmarried if the former spouse is married or refuses to remarry, even if the divorce took place before becoming a Christian.
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Some Churches of Christ hold to what is likely the hardest position on divorce and remarriage, believing adultery to be the only Biblical grounds. Some even advocate that if a person is divorced and remarried (outside of grounds of adultery) and then becomes a Christian, the person should divorce his/her current spouse and either remarry their former spouse or remain unmarried, or else they continue to commit adultery. This is an increasingly minority view.