The journey to the truth of Jesus Christ and His Church is an intense one. Those who have felt this intensity have been moved to conversion. It is the very point and purpose of witness and testimony. To both awaken and open the heart of non-believers, or even fellow believers, who may achieve a further richness and depth by finding a piece of theselves in the testimony of others. Of course the greatest witness a Christian can provide is the example of their own lives. The level, frequency, and determination which they apply to their particular imitation of Christ in this life. There is no harm, certainly, in the sharing of the intellectual concepts underpinning one's religion. Nor in explaining the local and cultural customs and nuances of one's practice. Indeed, the sharing of these things can spark interesting conversation.
The problem with your statements above, and the general approach you are taking here, is that your audience is made up, (at least predominantly, I would hope), of practicing Catholic and Orthodox Christians, who believe with every fiber of their being that Jesus, the Christ...the Logos...the incarnate human form of the Living God..the Word of God made flesh...who was born of the Virgin Mary, and became Man....who suffered, died, was buried, and rose from the dead in fulfillment of the scriptures...has, Himself provided the Church, which he established upon Peter (The rock). The Church of The Lord our God has been kept alive, as Jesus has asked through Apostolic succession for over 2,000 years, (so far), as we await his glorious return. Catholic Christianity itself, then, is a fulfillment of the scriptures, and the ordained pathway to God and His Kingdom.