The glory of God, in His infinite beauty and manifold perfections, is what we are made to point at, to know, to ponder, to love, and to worship.
Christ is not other than God in His representation of God. He is God representing God.
"It's a bold expectation, appealing for mercy when I don't have anything measurable to contribute or to earn for myself. I can't bargain with a Holy God. My appeal for grace [and mercy] is only and always Jesus."
"Let The Nations Be Glad" is one of those uplifting, rousing, this-is-what-we-know-and-so-therefore-let's-act-on-it type of songs that calls the church out into the fields of harvest, proclaiming His Name to every creature.
We have work to do, friend.