"I will take the blood from their mouths, the forbidden food from between their teeth. Those who are left will belong to our God and become leaders in Judah, and Ekron will be like the Jebusites." NIV translation
There no longer is a Philistine people as the only people left were Jews. The Jebusites were a Canaanite tribe that built the city of Jerusalem but were conquered by King David.
"But I will defend my house against marauding forces. Never again will an oppressor overrun my people, for now I am keeping watch." NIV translation
This verse speaks to Alexander's encounter with Jesus as he went to Jerusalem. The high priest (Jaddua) had prayed and God told him to go out and meet Alexander. He and the other priests put on their priestly robes and were accompanied by other people dressed in white. God had given Alexander a dream before he even started his military campaign and in that dream he had seen the high priest in his priestly robes.
In this dream, the high priest told him to go and conquer the Persians. After their meeting, Alexander went to the temple where he offered a sacrifice to God. At this time, he was shown the book of Daniel where God had showed Nebuchadnezzar that a Greek would overthrow the Media-Persian empire (see Daniel 2). In this verse, we see that God had promised to defend Jerusalem and He did by sending a dream to Alexander even before his war campaign began. We also see the promise that God is watching over His people and says that He will take care of them. That promise is for God's people (Israel) today!
"Rejoice greatly, O Daughter of Zion! Shout, Daughter of Jerusalem! See, your king comes to you, righteous and having salvation, gentle and riding on a donkey, on a colt, the foal of a donkey." NIV translation
Zechariah tells us of the first coming of Jesus and calls the Jewish people to celebrate the coming. We think of riding a donkey as demonstrating His humility but that is not what the word says here. Kings rode donkeys during peacetime or when they were going to an enemy to offer terms of peace. That is exactly what Jesus was doing when He rode into Jerusalem on that donkey. The terms of this peace deal between the Jews and God were that they would have to accept Jesus as their Savior (King). That same peace deal is extended to all of us today but we have to accept the terms that were presented for our salvation.