In the Book of Revelation, the holy city, the new Jerusalem is pictured as coming down from heaven to the believers (Rev. 21:1-4). But in the Book of Hebrews, the believers are pictured as coming up to the city of God.
Heb. 12:22-24 reads,
22 But you have come to Mount Zion and to the city of the living God, the heavenly Jerusalem, and to innumerable angels in festal gathering,
23 and to the assembly of the firstborn who are enrolled in heaven, and to God, the judge of all, and to the spirits of the righteous made perfect,
24 and to Jesus, the mediator of a new covenant, and to the sprinkled blood that speaks a better word than the blood of Abel.
Abraham was looking forward to coming up to the city of God. He was not looking at a temporary tent but a permanent city. He was not looking at the earthly land, but a heavenly land.
That is the attitude of faith. Faith does not look at the things of the earth. Faith looks at the things of heaven. Faith does not look at the things that are temporal. Faith looks at the things that are eternal. Paul wrote in 1 Cor. 4:17-18, “We do not look at the things which are seen, but at the things which are not seen. For the things which are seen are temporary, but the things which are not seen are eternal.” (NKJV)
Abraham was looking forward to the city of God—to live in that eternal city.