The Reformers did not return to the sources because they believed the old was better than the new, nor because antiquity possesses authority simply by virtue of its age. They returned to the sources to recover the language and words that were actually written and spoken, especially those by great teachers and, most importantly, God Himself.
The certainty of faith is utter assurance because it depends upon nothing of your own. It is entirely trusting that God is a propitious, pardoning God—the God who justifies sinners by forgiving them.
Sinners get faith as a gift when Christ takes their captivity captive.

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Your faith is not dependent on whether or not you suffer well. Your faith is dependent on the fact that Christ did.
In our search for absolution, human beings leave no stone unturned. We’re desperate to have our uneasy consciences soothed.
It’s a delivery of historical facts that tells us who Jesus is and what he has done for us through his dying on the cross and his rising from the grave.
If I’m honest, I want that completed Bible reading plan more than I want grace.
We live in the strength of our baptism again and again and again, returning to it every day according to God's promise. 
The gospel is the good news that in Christ we have been given the very righteousness of Christ himself. This means that everything God commands of us is given to us in Christ as a gift.
The following is an excerpt from “A Year of Grace: Collected Sermons of Advent through Pentecost” written by Bo Giertz and translated by Bror Erickson (1517 Publishing, 2019).
We confuse salvation and vocation in our quest to determine who is in control of our salvation.
One moment, we pray for our rescue from sin and death. The next moment, we beg our Father to do unto others what we hope he will never do to us.
What then does this sequence of stories teach us? It teaches us a pertinent lesson about the Christian life.
Have you ever felt haunted by fear, shame, and guilt? Have you ever worried that Jesus couldn't love you anymore? I have.
When we talk about bettering ourselves, we need to realize that a theology of the cross does not militate against this endeavor but that it places it squarely in the horizontal realm.