Berean Study Bible
Nevertheless, hold fast to what you have until I come.

King James Bible
But that which ye have already hold fast till I come.

American Standard Version
Nevertheless that which ye have, hold fast till I come.

Darby Bible Translation
but what ye have hold fast till I shall come.

Douay-Rheims Bible
Yet that, which you have, hold fast till I come.

English Revised Version
Howbeit that which ye have, hold fast till I come.

Young's Literal Translation
but that which ye have -- hold ye, till I may come;