American Standard Version
And they feared exceedingly, and said one to another, Who then is this, that even the wind and the sea obey him?

Berean Study Bible
Overwhelmed with fear, they asked one another, “Who is this, that even the wind and the sea obey Him?”

Douay-Rheims Bible
And they feared exceedingly: and they said one to another: Who is this (thinkest thou) that both wind and sea obey him?

English Revised Version
And they feared exceedingly, and said one to another, Who then is this, that even the wind and the sea obey him?

King James Bible
And they feared exceedingly, and said one to another, What manner of man is this, that even the wind and the sea obey him?

World English Bible
They were greatly afraid, and said to one another, "Who then is this, that even the wind and the sea obey him?"

Young's Literal Translation
and they feared a great fear, and said one to another, 'Who, then, is this, that even the wind and the sea do obey him?'

Mark 4:41 Additional Translations ...