Why is it important for Christians to trust in God's ability?

It is vital for Christians to trust in God's ability because it emphasizes the doctrine of grace. Salvation is not a human endeavor; rather, it is a divine act where God purifies our sins and grants us a new heart. Recognizing God's ability affirms that we are saved by grace through faith, not by any works we can perform. This liberates us from the burden of self-reliance and allows us to rest in the finished work of Christ, understanding that our eternal security is based entirely on His strength and merit.