Right. And about 55 A.D. when things started getting written, Peter had had his vision (later recorded in Acts), the Council of Jerusalem had been held, and it was very clear the future of the church lay within the Gentile nations. Those nations closet to Jerusalem were largely Greek-speaking. Latin was the other contender, but I've not seen anything that says Latin was a language much known by natives of first century Palestine.
And the majority of Bible and linguistic scholars still say that two decades before then it's most likely Jesus spoke Aramaic to the disciples.
I'm not sure what your point is.
My point is that it's immaterial what language Jesus spoke. The Holy Spirit used Greek to record and preserve His words. We can be assured the the Holy Spirit understood the intent of Jesus words whatever He spoke them in. Therefore it's the meaning of the Greek words we need to understand.