“But the ministry Jesus has received is as superior to theirs as the covenant of which he is mediator is superior to the old one, and it is founded on better promises” ( Hebrews 8:6 )
Jesus is the mediator or guarantor of the Covenant of grace. This covenant is far superior in every way imaginable to the Covenant of Law. This is because it is founded on better promises and backed by an oath between God and Jesus that it will be lasting and eternal ( Hebrews 7:21 ). In fact, King David himself looked forward to this covenant and congratulated the recipients, pronouncing a blessing on them “Blessed is he whose transgressions are forgiven, whose sins are covered. Blessed is the man whose sin the LORD does not count against him and in whose spirit is no deceit.” ( Psalms 32:1-2, Romans 4:6-8 ).
The better promises on which this covenant is founded rest solely in the Lord Jesus. It is superior because of this, and unlike the first, it is not based on cause and effect. In other words, God is not limited in his interaction with us based on something we do or do not do. In fact, chapter 8 defines the differences of the New Covenant. First He put his laws in our hearts and minds so that we can be familiar and intimate with His ways and precepts ( Hebrews 8:10 ). Secondly, He makes us His people, declaring that He will be our God ( Hebrews 8:10 ). Third, He reveals himself to us so that we do not need someone to tell us about God, we can experience Him for ourselves ( Hebrews 8:11 ). Lastly He has forgiven our sins and goes a step further declaring that he will also forget them entirely ( Hebrews 8:12 ). We have these amazing things as New Covenant believers, which is why our covenant is far superior than the previous one. This is what David saw and why he pronounced a blessing on us ( Psalms 32:1-2, Romans 4:6-8 ).
To highlight our wonderful covenant it is important to understand that the Old Covenant of Law was based on blessings and curses. Deuteronomy 28 lists both. The chapter starts out with these words spoken by the Lord, “If you fully obey the LORD your God and carefully follow all his commands I give you today, the LORD your God will set you high above all the nations on earth. All these blessings will come upon you and accompany you if you obey the LORD your God” ( Deuteronomy 28:1-2 ). He then gives the list of blessing that were theirs by obeying Him. However it was conditional, “The LORD will establish you as his holy people, as he promised you on oath, if you keep the commands of the LORD your God and walk in his ways” ( Deuteronomy 28:9 ).
In the same way, curses would befall the people when they were disobedient. “However, if you do not obey the LORD your God and do not carefully follow all his commands and decrees I am giving you today, all these curses will come upon you and overtake you” ( Deuteronomy 28:15 ). The list of the curses is immense and disastrous. This is why the New Covenant is so wonderful, because He placed His laws and precepts inside us and gave us the Holy Spirit to teach us to follow and obey ( I John 2:20, 27 ). This was not the case under the law of the Old Testament, they were subjected to the whims of the flesh. The Law strengthened sin against them arousing the desire for disobedience and the curses it brought ( Romans 7:10 , I Corinthians 15:56 ).
In the New Covenant, Jesus became a curse for us so we could have all of the blessings described in Deuteronomy 28 with none of the curses, “Christ redeemed us from the curse of the law by becoming a curse for us, for it is written: “Cursed is everyone who is hung on a tree.” He redeemed us in order that the blessing given to Abraham might come to the Gentiles through Christ Jesus, so that by faith we might receive the promise of the Spirit” ( Galatians 3:13-14 ). You can see how our Covenant is superior in every way. We receive all of the blessings and none of the curses. all because Jesus became the curse for us to redeems us from the Law.
In the same way our mediator is also far superior. Jesus is the Mediator of this Covenant just as Moses was the mediator of the Covenant of the Law. However Jesus has acquired a better ministry because he resides over it as a son not a servant. “Moses was faithful as a servant in all God’s house, testifying to what would be said in the future. But Christ is faithful as a son over God’s house. And we are his house, if we hold on to our courage and the hope of which we boast” ( Hebrews 3:5-6 ). Not only do we have a better and more advantageous Covenant based on nobler and higher promises, but we have a Mediator that is far superior in both title and position than that which was previously given. This is why the Old Testament Patriarchs looked forward to the time we enjoy because God has done a work through Jesus Christ that is unparalleled to anything they experienced. This is why God enacted the New Covenant making the first one obsolete ( Hebrews 8:13 ) so that we could be the people of God enjoying all of the blessings He bestows on us.