Just as Noah foresaw the great cataclysm to come, so we are to understand that the world above our heads and under our feet is destined to destruction, as we likewise await the promised world to come: "Lift up your eyes to the heavens, and look at the earth beneath; for the heavens vanish like smoke, the earth will wear out like a garment, and they who dwell in it will die in like manner; but my salvation will be forever (ΧΧΧ©ΧΧΦΌΧ’ΦΈΧͺΦ΄Χ ΧΦ°Χ’ΧΦΉΧΦΈΧ ΧͺΦΌΦ΄ΧΦ°ΧΦΆΧ), and my righteousness will never be dismayed" (Isa. 51:6).
This idea is repeated in the New Testament: "For as were the days of Noah, so will be the coming of the Son of Man" (Matt. 24:37). "But the Day of the LORD will come like a thief, and then the heavens will pass away with a roar, and the heavenly bodies will be burned up and dissolved, and the earth and the works that are done on it will be exposed. Since all these things are thus to be dissolved, what sort of people ought you to be in lives of holiness and godliness, waiting for and hastening the coming of the Day of God, because of which the heavens will be set on fire and dissolved, and the heavenly bodies will melt as they burn? But according to his promise we are waiting for new heavens and a new earth in which righteousness dwells. Therefore, beloved, since you are waiting for these, be diligent to be found by him without spot or blemish and at peace" (2 Pet. 3:10-14).
In light of all this, we look not to the things that are seen but to the things that are unseen. "For the things that are seen are transient, but the things that are unseen are eternal... For the invisible things of Him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead. Therefore we are strangers and exiles on the earth, looking forward to the city that has foundations, whose designer and builder is God" (2 Cor. 4:18; Rom. 1:20; Heb. 11:10,13).
Faith sees the invisible... Our father Abraham was promised descendents as numerous as the stars in the sky or sand on the seashore, despite the fact that he was an old man and his wife had long past the age of bearing children. Abraham believed in the One who gives life to the dead and calls into existence the things that do not exist: "He staggered not at the promise of God through unbelief but was strong in faith, giving glory to God; and being fully persuaded that, what He had promised, He was able also to perform: And therefore it was imputed to him for righteousness" (Rom. 4:19-22).