KJV - Wherefore tongues are for a sign, not to them that believe, but to them that believe not: but prophesying serveth not for them that believe not, but for them which believe.
ASV - Wherefore tongues are for a sign, not to them that believe, but to the unbelieving: but prophesying `is for a sign', not to the unbelieving, but to them that believe.
BBE - For this reason tongues are for a sign, not to those who have faith, but to those who have not: but the prophet's word is for those who have faith, and not for the rest who have not.
WEB - Therefore other languages are for a sign, not to those who believe, but to the unbelieving; but prophesying is for a sign, not to the unbelieving, but to those who believe.
YLT - so that the tongues are for a sign, not to the believing, but to the unbelieving; and the prophesy `is' not for the unbelieving, but for the believing,