And certainly Moses was faithful, with his entire house, like any servant, as a testimony to those things that would soon be said
Other versions
King James Version
And Moses verily was faithful in all his house, as a servant, for a testimony of those things which were to be spoken after;English Standard Version
Now Moses was faithful in all God's house as a servant, to testify to the things that were to be spoken later,New International Version
Moses was faithful as a servant in all God's house, testifying to what would be said in the future.