"God is the God of second chances." How often do you hear that phrase from well meaning Pastors, teachers and friends. Its a nice little phrase, but it is totally false. God is not the God of Second chances.
No do overs
His Word makes it perfectly clear that we get one shot at His Law, and if we blow it we are damned. And the bad news is that everybody blows it. No one has kept His Law perfectly. We all sinned in Adam. Not only that, but we blow it every day, countless times a day. Not only do we sin willfully, but we commit sins that we don't even know are sins. So even if God were to give us a second, third, fourth or hundredth chance we would blow them all.
Only perfection will do
Not one iota of our effort will bring us into right standing before God. Only perfection will make us right before Him. Only a perfect obedience to His Law can remove the damnation that we incurred. And the only way that we can have perfect obedience is if it's given to us. The most wonderful news in all of history is that Christ won that obedience for us. Christ became the Second Adam. Where the first Adam failed as our representative by breaking one command. Jesus, the Second Adam succeeded as our Representative by keeping all of God's commands. Christ came as a substitute for sinners. He lived a perfect life in the place of sinners. He went to the cross and died so that sinners like us wont have to. He kept the Law for us and then went to the cross and paid the penalty for every time we broke His Law.
Christ's work becomes our work through faith
The debt has been paid. Now, by faith in his work, we get all that He did credited to our account for free! And thats Good News. That’s Gospel! So God doesn't give us a second chance. As Tullian Tchividjian puts it, "God is not the God of second chances. He’s the God of one chance and a Second Adam."