Several things happened in close proximity. The stoning of Stephen, which could symbolically represent the Jews' final rejection of Christ. The conversion of Saul, and Peter's vision to take the Gospel to the Gentiles, followed by the conversion of Cornelius. Any of these could be the event God uses in the prophesy as the end of the second 3.5 years. Whichever, we see the final rejection by the Jews and the direction to bring the Gospel to the Gentiles. This rejection set in motion the destruction of the Temple and the Diaspora. Their fate was sealed.
Originally Posted by Beckrl
To preserve the government we must also preserve morals. Morality rests on religion; if you destroy the foundation, the superstructure must fall. When the public mind becomes vitiated and corrupt, laws are a nullity and constitutions are waste paper. Daniel Webster, 4th of July, 1800, Oration at Hanover, N.H.