Christ Paid the Debt of Our Sin
“Since God desired to save us and since we could not pay the debt of sin ourselves, He in His mercy decided to do so Himself. Two thousand years ago, Jesus Christ, the incarnate God, came to die on the cross to pay the debt for our sin. Having no sin Himself, He alone was qualified to die this substitutionary death. His death, being reckoned by God as ours, was acceptable to God, and He raised Him from the dead. Now when we believe in Christ, His death is counted in God’s sight as our own. Thus, our debt of sin is righteously paid, and we are saved.”
From Basic Elements of the Christian Life, vol. 1 by Witness Lee and Watchman Nee (mass-distribution ed., pp. 14-15). Bibles for America gives this book away for free. You can order your free copy here. You can also download a free PDF version here.