But how they stumble at Christ, who trust in their works, it is not difficult to understand; for except we own ourselves to be sinners, void and destitute of any righteousness of our own, we obscure the dignity of Christ, which consists in this, that to us all he is light, life, resurrection, righteousness, and healing. But how is he all these things, except that he illuminates the blind, restores the lost, quickens the dead, raises up those who are reduced to nothing, cleanses those who are full of filth, cures and heals those infected with diseases? Nay, when we claim for ourselves any righteousness, we in a manner contend with the power of Christ; for his office is no less to beat down all the pride of flesh, than to relieve and comfort those who labor and are wearied under their burden.
John Calvin, Commentary on Romans, 380
Here are a couple of resources that I have found helpful when thinking about the sovereignty of God.
John Piper: Are There Two Wills In God?
Alistair Begg: Evangelism and the Sovereignty of God
Click on the “Encore 2017” link and scroll down to the John 6 sermon
Our common theme in worship is the infinite worth of God and his purpose to “make known the riches of his glory for the vessels of mercy” (Rom 9:23). Our confidence in evangelism comes from God’s freedom to “have mercy on whomever he wills” (Rom 9:18). Our commitment to world missions is fueled by the passion of God to exert his sovereign power “so that [his] name may be proclaimed in all the earth” (Rom 9:17). And the ground of our conviction that God is reliable in all of life is this: No matter what heart-wrenching perplexities we face, “it is not as though the word of God has failed” (Rom 9:6).
John Piper, The Justification of God