1 Samuel 15:29 says that God does not lie and does not change his mind the way people do, so his word about Saul’s kingdom stands firm. The prophet Samuel speaks these words to King Saul after Saul has disobeyed God’s command concerning the Amalekites.
Also the Strength of Israel will not lie nor repent; for he is not a man, that he should repent.”
1 Samuel 15:29 (WEB)
What 1 Samuel 15:29 Means
The verse begins by calling God “the Strength of Israel,” a title that points to his reliability as the one who holds his people together. Samuel then makes two claims about him: God “will not lie,” meaning he always tells the truth and keeps his promises, and he will not “repent,” meaning he does not reverse a decision in the way a person might after changing their mind.
The reason Samuel gives is simple: God “is not a man.” Human beings sometimes regret their choices, shift their plans, or break their word. God does not work that way. The verse does not promise that God never responds to human prayer or never shows mercy. It affirms that his settled purposes and his truthful word are not unstable or open to whim.
The Context of 1 Samuel 15:29
First Samuel tells the story of Israel’s transition from judges to kings. Saul, the first king, was chosen by God but repeatedly failed to obey him. In chapter 15 he spares King Agag and the best of the Amalekite livestock, even though God had commanded that they be destroyed. Samuel confronts him, and Saul’s kingdom is taken from him. The traditional author is Samuel, though the book itself was likely shaped by later editors, and it was written for the people of Israel as they reflected on their history under God’s rule.
The verse sits in the middle of this confrontation. Just before it, Saul has been told his kingdom is torn away, and just after it, Saul pleads for honor and worship. Read in that setting, Samuel’s words are not a general lesson about God’s nature alone. They explain why Saul cannot expect God to restore what he has rejected, and why the decision to give the kingdom to another stands.
Key Phrases in 1 Samuel 15:29
Numbers 23:19
God is not a man, that he should lie, nor a son of man, that he should repent. Has he said, and will he not do it? Or has he spoken, and will he not make it good?
(WEB)
This verse states directly that God is not a man who lies or changes his mind, and it reinforces the same contrast between God’s faithful word and human inconstancy that Samuel draws in 1 Samuel 15:29.
Lamentations 3:22-23
22 It is because of the LORD’s loving kindnesses that we are not consumed, because his compassion doesn’t fail. 23 They are new every morning. Great is your faithfulness.
(WEB)
These verses speak of God’s steadfast love and faithfulness renewed each morning, showing that his unchanging character is also a source of mercy and hope for those who depend on him.
A Short Prayer From 1 Samuel 15:29
Lord, you are the Strength of Israel, and your word does not fail. I confess that I often waver, changing my mind, breaking my promises, and returning to old patterns. Help me to trust that you are not like me, that your purposes stand and your truth endures. Teach me to be faithful in what I say and do, and to rest in your steadiness when my own heart feels unsure.
Thank you that you do not lie, and that your mercy meets me when I come back to you. Hold me close in the days ahead, and let my life reflect your reliability to the people around me. Amen.
