Biblical examples of God fulfilling promises?
What other biblical examples show God fulfilling promises despite human doubt?

Sarah’s Laugh—and God’s Promise

Genesis 18:12: “So Sarah laughed to herself, saying, ‘After I am worn out and my lord is old, will I now have this pleasure?’”

• Her private laugh did not cancel God’s vow. A year later, “The LORD did for Sarah what He had promised” (Genesis 21:1).


Familiar Pattern: Human Unbelief, Divine Follow-Through

Throughout Scripture, people second-guess what the Lord says, yet He still completes His word—every time.


Snapshots of Doubt Met by Fulfillment

• Abraham—Genesis 17:17

– Doubt: “Can a son be born to a man who is a hundred years old?”

– Fulfillment: Isaac’s birth (Genesis 21:2).

• Moses—Exodus 3–4

– Doubt: “Who am I?” (3:11); “What if they do not believe me?” (4:1); “I am slow of speech” (4:10).

– Fulfillment: Israel walks out of Egypt, plunder in hand (Exodus 12:41, 51).

• Israel at the Red Sea—Exodus 14:11–12

– Doubt: “Was it because there were no graves in Egypt that you brought us to die in the wilderness?”

– Fulfillment: “The LORD saved Israel that day” as the sea closed over the Egyptians (14:30).

• Gideon—Judges 6:13, 17

– Doubt: “If the LORD is with us, why has all this happened?” “Give me a sign.”

– Fulfillment: Midian routed with only 300 men (Judges 7:7, 22).

• Elisha’s day—2 Kings 7:2, 16–17

– Doubt: Officer sneers, “Even if the LORD were to open the floodgates of heaven, could this happen?”

– Fulfillment: Overnight, Samaria’s famine ends; the doubting officer dies in the gate he disbelieved would overflow.

• Zechariah—Luke 1:18, 20, 57

– Doubt: “How can I be sure of this? I am an old man.”

– Fulfillment: John the Baptist is born; Zechariah’s speech returns.

• Disciples’ Thomas—John 20:25–28

– Doubt: “Unless I see … I will never believe.”

– Fulfillment: The risen Christ stands before him; Thomas confesses, “My Lord and my God!”


What These Stories Whisper to Us

• God’s reliability is anchored in His character, not in our confidence.

• Doubt may delay our joy, but it cannot derail His plan.

• Each fulfilled promise becomes fresh evidence that we can trust the next one.

How can we strengthen our faith when facing seemingly impossible situations?
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