Abel, Enoch and Noah had exercised faith in Jehovah’s promise of a “seed” that would execute judgment on God’s enemies, but to Abraham Jehovah gave an expanded promise. This was after Jehovah had tested Abraham as to his willingness to give his only-begotten son, Isaac, in sacrifice. God then said: “I shall surely bless you and I shall surely multiply your seed like the stars of the heavens and like the grains of sand that are on the seashore; and your seed will take possession of the gate of his enemies. And by means of your seed all nations of the earth will certainly bless themselves due to the fact that you have listened to my voice.”​—Gen. 22:1-18.

Thus, the blessing of all peoples of the earth must come through Abraham’s “seed.” And who is that “seed”? The apostle Paul answers: “Now the promises were spoken to Abraham and to his seed. . . . ‘And to your seed,’ who is Christ.”​—Gal. 3:16.

Remember, Abraham lived some 2,000 years before Christ Jesus appeared as the “seed” of promise, and yet his faith in that promise was immovable. Your faith, too, can become real​—firm like Abraham’s faith in God’s promise.​—Rom. 4:20-22.