When He had disarmed the rulers and authorities, He made a public display of them, having triumphed over them through Him.Colossians 2:15(NASB)
The crucifixion of our Lord Jesus Christ freed us from the righteous demands of the law by nailing them to the cross, and permanently erasing the un-payable certificate of debt that we owe, so that all who believe in Him are no longer under law but under grace.
Christ fulfilled the law on our behalf - not so that we could live lawless lives, but to enable us to obey the Lord in spirit and truth and live godly in Christ Jesus out of love for Him and not because of slavish fear.
But Christ's sacrifice, which nailed the law to the cross and broke the power of sin and death in our lives, had a further magnificent consequence, because the offering of Himself on Calvary's cross disarmed Satan and the ungodly principalities of evil. Through death.. Christ triumphed over the powers of darkness; the forces of wickedness and all demonic rulers in the spiritual realm.
The cross must have appeared to be a huge success to Satan's evil forces but is was short-lived, for by means of His death, resurrection and ascension Christ was enabled to proclaim: Now is the judgment of this world; now will the ruler of this world be cast out.
Christ's sacrificial death, glorious resurrection and triumphant ascension into heavenly places, disarmed the principalities and powers of darkness; destroying the one with power over death and dismantling Satan's armies of all their powers - and we are called to watch, pray, resist the devil and keep our eyes on Jesus - knowing that Satan is already a defeated enemy.
Heavenly Father, I lift my voice in triumphant praise and joyful thanks for Christ's victory over sin, Satan, death and hell. Without Christ's willingness to suffer and die on the cross on my account, I would still be a slave to sin, under Satan's dominion, a transgressor of the law and estranged from You. But You have set me free through the shed blood of your dearly beloved Son - by grace through faith, so that I may love and worship You in spirit and in truth. I praise and thank You that You have already disarmed the satanic rulers and authorities and triumphed over them - making them a public example.. and pray that I may live my life as unto the Lord - in Jesus name I pray, AMEN.