Authorized Version
    Wherefore ye must needs be subject, not only for wrath, but also for conscience sake.

American Standard Version
    Wherefore [ye] must needs be in subjection, not only because of the wrath, but also for conscience' sake.

The Bible in Basic English
    So put yourselves under the authority, not for fear of wrath, but because you have the knowledge of what is right.

The Darby Bible
    Wherefore it is necessary to be subject, not only on account of wrath, but also on account of conscience.

The Webster Bible
    Wherefore [ye] must needs be subject, not only for wrath, but also for conscience sake.

Young's Literal Translation
    Wherefore it is necessary to be subject, not only because of the wrath, but also because of the conscience,

World English Bible
    Therefore you need to be in subjection, not only because of the wrath, but also for conscience' sake.