Savouring the Sovereignity of Grace in the lives of flawed Saints

I am reading a book called "The Legacy of Sovereign Grace" by John Piper. It's a small book exploring the Triumphant grace of God in the lives of St Augustin, Martin Luther and John Calvin. The phrase the captured my attention was the heading of the introduction. Most of us are familiar with the flaws of these three persons (Auguestine still embraces Catholic Eucharist; Luther was at times a fouled mouth and an anti-semitic; Calvin had blood on his hands in the execution of a heretic in Geneva) and because of that shun their writings altogether. That said, does it mean I must accept the theology of people I shun in the past? Ah, I can't answer that right now. It's really hard to accept them. It'll be a long struggle within myself.

The phrase "Savouring the Soverignity of Grace in the lives of Flawed Saints" is a reminder that no sinners or saints can sin beyond the hope of being saved if the Lord wills that they be saved. The flaws of Christians shouldn't be mistaken for false salvation; for the salvation of God is sure and His sactification is at work in our flawed lives.

What a release!
What a comfort!