It’'s so strange though I did not know the connection, for we just came through the desert populated by Joshua trees, and the point I was trying to make was totally innocuous of any relationship , the thirst may really come down to Chist’s thirst on the cross.
But i am me no after all, think up the moment’s impression rather than expressing it.
But so far this is what I could get:
“Joshua comes from the Hebrew name “Yehoshua,” meaning “God is deliverance.” In the Old Testament of the Bible, Joshua was the name of the Israelite leader who succeeded Moses and led the Hebrews to the Promised Land. Origin: Yehoshua is derived from yeho (a name of God) and shua (a form of the verb to deliver or save)”
As far as 'free goes, I used it for effectIng assonance and did think about than the meaning it was try in to achieve, maybe to reflect an internal contradiction that a tree cannot be literally free because the tree is bound by it’s roots.
But maybe freedom can be had in being bound to a stationary position.