New Living Translation
Then he asked them, “Why are you afraid? Do you still have no faith?”

American Standard Version
And he said unto them, Why are ye fearful? have ye not yet faith?

Berean Study Bible
“Why are you so afraid?” He asked. “Do you still have no faith?”

Douay-Rheims Bible
And he said to them: Why are you fearful? have you not faith yet?

English Revised Version
And he said unto them, Why are ye fearful? have ye not yet faith?

King James Bible
And he said unto them, Why are ye so fearful? how is it that ye have no faith?

World English Bible
He said to them, "Why are you so afraid? How is it that you have no faith?"

Young's Literal Translation
and he said to them, 'Why are ye so fearful? how have ye not faith?'

Mark 4:40 Additional Translations ...