'Speech' in the Bible

I am about to bring a nationfrom far away against you,house of Israel.This is the Lord’s declaration.It is an established nation,an ancient nation,a nation whose language you do not knowand whose speech you do not understand.

Thus saith the LORD of hosts, the God of Israel; As yet they shall use this speech in the land of Judah and in the cities thereof, when I shall bring again their captivity; The LORD bless thee, O habitation of justice, and mountain of holiness.