With it we bless God the Father, and with it we curse men who have been made in the similitude of God. Out of the same mouth proceeds blessings and cursings. My brethren, these things not ought to be so. Does a spring send forth fresh water and bitter water from the same opening? Can a fig tree, my brethren, bear olives, or a grapevine bear figs? Thus, no spring yields both salt water and fresh. So this passage can be quite sobering, and there's a lot to learn from here.