25.What was the writer’s final gift to the Jewish saints?

Divine grace.

The expression "the righteous shall live by faith" is defined by the entire text of the Book of Hebrews. The righteous shall live by faith means the righteous shall live by diligently seeking the Lord in every area of thinking, speaking, and doing, throughout their lifetime on the earth—and forever after.

The new covenant is shown to be superior to the old covenant in that it removes the source of sin from the worshiper, meanwhile forgiving him and bringing him to the knowledge of the Lord.

The Book of Hebrews is a word of exhortation to the saints. It is an exhortation to experienced Christians to not go back into the world but rather to press forward into the rest of God, into the fullness of the Divine salvation and inheritance. The inheritance is envisioned as being a city that has foundations.

Heaven itself is not a city. However in Heaven there is an unshakable city named the new Jerusalem. The new Jerusalem is the glorified Church, the Bride of the Lamb. It is being perfected in the saints today, particularly its impregnable wall against sin. The names of the Apostles are in the highly ornamented twelve foundations of the wall.

The goal of the Christian redemption is not eternal residence in Heaven, it is our transformation into new creations in Christ so we may be part of the city that has foundations.