What principle Christianized philosophical issues?

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This is an interesting question, although I'm not certain what you are asking. Here's my take on the subject; hope this helps.

Christianty has it's roots in Judaism which is based on God's Law as given to Moses. The Mosaic or ceremonial laws were the old system of feasts and sacrments (animal sacrfices) which foreshadowed the coming of Messiah (Jesus).

Human philosophy was a product of the Greek empire which had fallen to Roman rule around 330 BC. The teachings and beliefs of both the Greeks and the Romans posed a threat the Judaism belief system.

All of Jesus' teachings were based solely on the Law. During the time of the Roman occupation, te Christian movement found it's way back into Rome and Greece, primarily through Saul of Tarsus (who re-named himself Paul the Apostle). Saul was a Jewish Pharisee who was converted to Christianity by a vision from God.

The Chrisitan philosophy was summarized by Jesus himself when He said "You shall love the Lord your God with all your heart, and with all your soul, and with all your mind." and "You shall love your neighbour as yourself." (Matt. 22:37, 39)

Answer

I'm not sure I understand your question. It appears you are asking what philosophical (study of man) issues have been taken up by Christianity (theology, religion). Since Christians believe God has, is, and always will be and that God created man at a given point in time, I believe they would argue philosophical issues have not been Chrisianized, but Christian issues have been philosophicalized.

With that in mind, I can give a very generalized list of topics both Christianity and philosophy address: 1.) The nature of man
2.) Man's purpose on earth
3.) Man's need for a Savior
4.) The role of God in men's lives.
5.) Man serving God or man serving self.
6.) Societal issues of all types
And the list could go on and on.

I'm not sure if this is even close to what you were asking, but maybe others can add their comments and be more specific.

Answer

First we must established what are principles unique to Christianity and not borrowed from other elder religions. Then and only then can we answer your question.

First answer by ID3671117030. Last edit by Itchie.c2. Contributor trust: 550 [recommend contributor]. Question popularity: 29 [recommend question]