I believe that God is not confined to Christianity, but the story of the Cross brings much hope thinking of what God did through Christ to redeem us.
He Chose the Nails: What God Did to Win Your Heart by Max Lucado aggregates different parts of the Scriptures to paint a clear picture of what the crucifixion of Jesus meant to the world.
As a believer, I especially enjoyed the part where the author spoke about positional and progressive sanctification, signified by the blood (Heb. 9:12) and water (John 7:38-39) that flowed out of the piercing on Christ’s rib (John 19:34) on the cross.
The Son of God became the Lamb of God, the cross became the altar, and we were “made holy through the sacrifice Christ made in his body once and for all time” (Heb. 10:10).Excerpt from Chapter 11: “I Have Reedemed You and I Will Keep You”
Although we have positional sanctification (Heb. 10:10, done deal, once and for all), we also have progressive sanctification (John 7:38-39) which is the life after salvation: how God works in us through the Holy Spirit. The latter is not needed for the former but is equally important.
The book has 15 chapters full of wisdom from the Bible about the significance of the death of Christ, His empathy for our total depravity as humans, and how He reconciled us eternally to God through the cross. I loved that the book was completely free of condemnation. It was also an engaging read, written with a generous dose of humor.