Why did God not rebuke Abraham's doubts?

In Genesis 15, when Abraham expresses doubt, God does not respond with condemnation but rather with reassurance. This illustrates God’s grace and the nature of His covenantal faithfulness. Rather than focusing on Abraham’s imperfect faith, God affirms the promise of inheritance through a sacrificial covenant. This highlights that even when doubts linger in our hearts, God's promises remain secure and are fulfilled solely based on His righteousness, ensuring that our relationship with Him is one of grace, not legalistic perfection.