Sarah had overheard the Lord saying she would have a son: "Therefore Sarah laughed within herself, saying, After I am waxed old shall I have pleasure, my lord being old also?" (Gen. 18:12).

Sarah was surprised the Lord had detected her laugh, and she "denied, saying, I laughed not; for she was afraid. And he said, Nay; but thou didst laugh" (v. 15).

Even though Sarah found it difficult to believe, God had given His final announcement that she and Abraham would have a son.

They had waited nearly 25 years, but now was God's time. Abraham was as good as dead, and Sarah was past the age of childbearing, but what God had promised, He was able to perform.

Even though God was going to work the impossible, He was going to use human means. God also wants to work the impossible through us if we will allow Him to do so.

Christ said, "If ye abide in me, and my words abide in you, ye shall ask what ye will, and it shall be done unto you" (John 15:7). God wants to perform the impossible by using believers as His human instruments.

God asked Abraham and Sarah, "Is any thing too hard for the Lord?" (Gen. 18:14). We, too, must respond to this question. As we face seeming impossibilities, do we think God is unable to perform what He has promised?

"For with God nothing shall be impossible" (Luke 1:37).