Read Genesis 18
Focus on verse 13-14
Abraham laughed when God told him Sarah would have a son… now Sarah overhears Abraham talking with three visitors who tell him Sarah will have a son and she laughs to herself. Both of them laughed because they did not believe this would be possible for them to have a child in their old age…. both were confronted by the Lord because of their initial unbelief.
The Lord said to Abraham, “Why did Sarah laugh and say, ‘Shall I indeed bear a child, now that I am old?’ Is anything too hard for the Lord? At the appointed time I will return to you, about this time next year, and Sarah shall have a son.” (v. 13-14)
How fitting that the child’s name was “Isaac” which means, “he laughs”. Interestingly their unbelief did not prevent the miracle from happening. Perhaps the Lord also had the opportunity to laugh when the event came about and they were happily surprised by the arrival of Isaac a year later. The moral here: “Go ahead and laugh when God informs you that He will use you to bring about something that seems impossible”. It apparently does not impede Him from bringing about His will in our lives, and as the Psalmist writes in Psalm 126:2
“Then our mouth was filled with laughter, and our tongue with shouts of joy; then they said among the nations, “The Lord has done great things for them.”