Acts 7:4 --- Read it and weep!!!!
Obviously some people with religiously correct agendas have your "Chaldaios" and your "Hebraikos" backwards!!!
It speaks of "leaving the land of the Chaldeans." And Stephen is talking about Abraham. What does that have to do with the Chaldean language (Hebraisti) of the Jews in the 1st century AD? Seems like you are drowing and grababing every straw you can find. Pathetic.