Charles Spurgeon Commentary Matthew 23:35-36

"that upon you may come all the righteous blood shed on the earth, from the blood of Abel the righteous unto the blood of Zachariah son of Barachiah, whom ye slew between the sanctuary and the altar. Verily I say unto you, All these things shall come upon this generation." — Matthew 23:35-36 (ASV)

So they did. The destruction of Jerusalem was more terrible than anything that the world has ever witnessed, either before or since.

There must have been nearly a million and a quarter of people killed during that terrible siege, and even Titus, when he saw the awful carnage, said, "What must be the folly of this people that they drive me to such work as this? Surely, the hand of an avenging God must be in it." Truly, the blood of the martyrs slain in Jerusalem was amply avenged when the whole city became a veritable Aceldama, or field of blood.