Jesus took our sins and nailed them to his cross, therefore defeating satan.

Our sins are already paid for – act like it!

Colossians 2:13-14 (KJV) – and you, being dead in your sins and the uncircumcision of your flesh, hath he quickened together with him, having forgiven you all trespasses; blotting out the handwriting of ordinances that was against us, which was contrary to us, and took it out of the way, nailing it to his cross.