This was to fulfill what was spoken by the prophet:"I will open my mouth in parables; I will utter what has been hidden since the foundation of the world."

Now these things happened to them as an example, but they were written down for our instruction, on whom the end of the ages has come.

For

Now Hagar is Mount Sinai in Arabia; she corresponds to the present Jerusalem, for she is in slavery with her children.

And he took bread, and when he had given thanks, he broke it and gave it to them, saying, "This is my body, which is given for you. Do this in remembrance of me."

and all drank the same spiritual drink. For they drank from the spiritual Rock that followed them, and the Rock was Christ.

The two

To give a human example, brothers:even with a man-made covenant, no one annuls it or adds to it once it has been ratified.

This makes Jesus the guarantor of a better covenant.

But as it is, Christ has obtained a ministry that is as much more excellent than the old as the covenant he mediates is better, since it is enacted on better promises.

Therefore he is the mediator of a new covenant, so that those who are called may receive the promised eternal inheritance, since a death has occurred that redeems them from the transgressions committed under the first covenant.

And the Holy Spirit also bears witness to us; for after saying,

and to Jesus, the mediator of a new covenant, and to the sprinkled blood that speaks a better word than the blood of Abel.

Now may the God of peace who brought again from the dead our Lord Jesus, the great shepherd of the sheep, by the blood of the eternal covenant,

Which

For freedom Christ has set us free; stand firm therefore, and do not submit again to a yoke of slavery.

For you did not receive the spirit of slavery to fall back into fear, but you have received the Spirit of adoption as sons, by whom we cry, "Abba! Father!"

General references

The LORD spoke to Moses on Mount Sinai, saying,