God is sovereign, good, just, merciful and loving. Man can not define those terms. God defines those terms. We exist because he says so. His people are saved because he chose them, the Son competed the atonement on behalf of those God chose, and the Spirit applies that work to God's people. Soli Deo Gloria.
"Every service is a structure of acts and words through which we receive a sacrament, or repent, or supplicate, or adore. And it enables us to do these things best — if you like, it “works” best—when, through long familiarity, we don’t have to think about it. As long as you notice, and have to count, the steps, you are not yet dancing but only learning to dance. A good shoe is a shoe you don’t notice. Good reading becomes possible when you need not consciously think about eyes, or light, or print, or spelling. The perfect church service would be one we were almost unaware of; our attention would have been on God."