Mark 8:12

And he (c) sighed deeply in his spirit, and saith, Why doth this generation seek after a sign? verily I say unto you, (d) There shall no sign be given unto this generation.

(c) These sighs came from the centre of his heart for the Lord was very much moved with the great unbelief of these men.

(d) Literally, "If a sign be given". It is an abbreviated kind of speech very common among the Hebrews; it is the same as when we say, "Let me be taken for a liar", or something similar. And when they speak out the whole, they say, "The Lord do such and such by me.