As fatuous human beings, we easily and often let our emotions rule the day. C.S. Lewis had some things to say about religious feelings.
It is quite right that you should feel that “something terrific” has happened to you (It has) and be “all glowy.” Accept these sensations with thankfulness as birthday cards from God, but remember that they are only greetings, not the real gift. I mean, it is not the sensations that are the real thing. The real thing is the gift of the Holy Spirit which can’t usually be—perhaps not ever—experienced as a sensation or emotion. The sensations are merely the response of your nervous system. Don’t depend on them. Otherwise when they go and you are once more emotionally flat (as you certainly will be quite soon), you might think that the real thing had gone too. But it won’t. It will be there when you can’t feel it. May even be most operative when you can feel it least.
What Lewis called, “all glowy,” we call a “Jesus high,” or something to that effect. In my Bible reading, I can’t recall many Old Testament accounts of “glowy” emotions, except perhaps in King David’s praise psalms and Solomon’s Song of Songs. The New Testament reports of some folks who were quite joyful after being healed or forgiven of their sins.
My own emotional experiences reflect my awe when I meditate on God’s magnificent greatness, or at least the minuscule part of it that I can perceive, and especially his grace and faithfulness toward me, even when I was steeped in sin. I have some academic idea of why God the Father allowed his incarnate Word to become a man, only to be blasphemed, marginalized, humiliated, tortured, and murdered. But I can’t even begin to grasp the magnitude of Jesus’ sacrifice from his Father’s perspective. Fact is, I can hardly bear my joy over what his gift means to me, or my grief over the suffering that I caused him.
As Lewis so effectively stated, all those intense emotions are just an added bonus, and have nothing to do with the actual salvation experience. I must say, though, that anyone who becomes reconciled to God through his Son’s blood, and doesn’t feel immense gratitude, has the understanding of a worm (nothing personal).