The clearest explanation of what Christ's work meant is found in the NT Epistles.
The OT contained shadows and types of what was to come.
Long ago, at many times and in many ways, God spoke to our fathers by the prophets, but in these last days he has spoken to us by his Son, whom he appointed the heir of all things, through whom also he created the world.
(Heb 1:1-2)
When it says 'He has spoken to us through His Son', it is speaking of the Apostles teachings transmitted to us in writing. (Even the four Gospels are included with that since Jesus never wrote an Epistle).
We must interpret the OT in light of the New not visa-versa.
Jeremiah 34:18 Those who have violated my covenant and have not fulfilled the terms of the covenant they made before me, I will treat like the calf they cut in two and then walked between its pieces.
Genesis 15:8 But Abram said, “Sovereign Lord, how can I know that I will gain possession of it?”
9 So the Lord said to him, “Bring me a heifer, a goat and a ram, each three years old, along with a dove and a young pigeon.”
10 Abram brought all these to him, cut them in two and arranged the halves opposite each other; the birds, however, he did not cut in half. 11 Then birds of prey came down on the carcasses, but Abram drove them away.
17 When the sun had set and darkness had fallen, a smoking firepot with a blazing torch appeared and passed between the pieces. 18 On that day the Lord made a covenant with Abram and said, “To your descendants I give this land, from the Wadi of Egypt to the great river, the Euphrates—
Judges 19:29 When he reached home, he took a knife and cut up his concubine, limb by limb, into twelve parts and sent them into all the areas of Israel. 30 Everyone who saw it was saying to one another, “Such a thing has never been seen or done, not since the day the Israelites came up out of Egypt. Just imagine! We must do something! So speak up!”
Hebrews 9:22 In fact, the law requires that nearly everything be cleansed with blood, and without the shedding of blood there is no forgiveness.
Revelation 7:14 I answered, “Sir, you know.” And he said, “These are they who have come out of the great tribulation; they have washed their robes and made them white in the blood of the Lamb.
Matthew 12:40 For as Jonah was three days and three nights in the belly of a huge fish, so the Son of Man will be three days and three nights in the heart of the earth.
Hebrews 10:32 Remember those earlier days after you had received the light, when you endured in a great conflict full of suffering.
Romans 5:3 Not only so, but we also glory in our sufferings, because we know that suffering produces perseverance;
The old, everything was performed in the natural, but now it is done in spirit. And so, the laws still stand, but this time everything has to be perceived by its spiritual nature.
Like to honor you father and mother.
Matthew 23:9 And do not call anyone on earth ‘father,’ for you have one Father, and he is in heaven.
Deuteronomy 6:5 Love the Lord your God with all your heart and with all your soul and with all your strength.
John 19:27 and to the disciple, “Here is
your mother.” From that time on, this disciple took her into his home.
Genesis 2:24 That is why a man leaves his father and mother and is united to his wife, and they
become one flesh.
Without the old, you probably are offending someone.
Romans 7:7 What shall we say, then? Is the law sinful? Certainly not! Nevertheless, I would not have known what sin was had it not been for the law. For I would not have known what coveting really was if the law had not said, “You shall not covet.”
2 Corinthians 3:13 We are not like Moses, who would put a veil over his face to prevent the Israelites from seeing the end of what was passing away. But their minds were made dull, for to this day the same veil remains when the old covenant is read. It has not been removed, because only in Christ is it taken away. Even to this day when Moses is read, a veil covers their hearts. But whenever anyone turns to the Lord, the veil is taken away.
Hebrews 5:13
Anyone who lives on milk, being still an infant, is not acquainted with the teaching about righteousness.
The word Bible means bibliography and so it means to keep as a reference book in order to understand whom is God and which no one has acknowledge yet.