Hebrews 11:15

11 By faith Sarah, even though she was barren and beyond the proper age, was enabled to conceive a child, because she considered Him faithful who had promised.

12 And so from one man, and he as good as dead, came descendants as numerous as the stars in the sky and as countless as the sand on the seashore.

13 All these people died in faith, without having received the things they were promised. However, they saw them and welcomed them from afar. And they acknowledged that they were strangers and exiles on the earth.

14 Now those who say such things show that they are seeking a country of their own.

15 If they had been thinking of the country they had left, they would have had opportunity to return.

16 Instead, they were longing for a better country, a heavenly one. Therefore God is not ashamed to be called their God, for He has prepared a city for them.

17 By faith Abraham, when he was tested, offered up Isaac on the altar. He who had received the promises was ready to offer his one and only son,

18 even though God had said to him, “Through Isaac your offspring will be reckoned.”

19 Abraham reasoned that God could raise the dead, and in a sense, he did receive Isaac back from death.

Read all of Hebrews 11