Because the full quote of Luke 1:34 (KJV) is: "Then said Mary unto the angel, 'How shall this be, seeing I know not a man?'".
William Shakespeare: The Tragedy of King Lear
ACT IV. Scene VII. (One of many examples).
Lear.
Where have I been? Where am I?--Fair daylight,--
I am mightily abus'd.--I should e'en die with pity,
To see another thus.--
I know not what to say.--
I will not swear these are my hands:--let's see;
I feel this pin prick. Would I were assur'd
Of my condition!
Translation according to SD. "I will
never know what to say.
Or - in more modern language:
Luke 1:34 (RSV)
And Mary said to the angel, "How shall this be, since I have no husband?"
Does "I have . . ." mean "I will never have . . ."? Did Mary ever have a husband?