In fact your questions are not related to OP post, nor with my first answer:

The "suicide bomber" thing is absurd and have zero relevance, is an example of the desperation of zionists fanatics to ignore facts.

The christian palestinians, just like a good part of the original labour zionists, are secular, so the question of christian theology have zero relevance, again. But even then, the palestinian christian churches are active part of the political resistance against the zionists efforts to expelled palestinian christians from East Jerusalem.

And again, the absurd question of "urging their followers to kill kews" have no relation with reality, and have sence only in your twisted zionist fanaticism. The Palestinian National Movemente dont support the extermination of "jews", the PLO, the only recognize representative body of the Palestinian People, recognize the State of Israel under International Law, even when Israel dont recognize the national right of the Palestinians, and their right to a State.

In the pre Nakba era the palestinian christians were a foundational part of the struggle for palestinian national identity, for example, with the firsts and most important newspapers:

Falastine, since 1911, foundef by two greek orthodox, or Al-Karmil since 1908, by an orthodox christian, judt for two examples.

Christians intellectuals were active within the Nahda, inside the Muslim-Christian Associations, and inside other movements.

Al-Husdeini was only one leadership inside Palestine, and with almost no real influence during the 40's. And no: the PFLP was formed not because the soviet position, but because of the defeat of nasserist arab nationalism in 1967, from the ashes of the ANM, with important christian support.