Numbers 20:12 English Standard Version (ESV) And the Lord said to Moses and Aaron, “Because you did not believe in me, to uphold me as holy in the eyes of the people of Israel, therefore you shall not bring this assembly into the land that I have given them.”
We will see this again, we have seen it in our generations. Leaders for various reasons disobey God’s command and lose their position and influence over flock. Sad but true and it just means they are human. Perhaps it is hard to be humble when so many people trust you and depend on you to lead them. I say you in the generic sense because I am not a leader. My readers may not be leaders now but God has plans for all of us.
Learn the lessons of past leaders and why they went astray. Moses struck the rock twice when told to speak to it to receive water. That does not seem like a big thing to many but God sees things differently. The Rock was a representative symbol of His Son Jesus Christ. He had been struck once and now Moses strikes Him again. The reference passages appear thousands of years later but for God it happened there and then at Meribah.
Hebrews 6:4-6 English Standard Version (ESV)
4 For it is impossible, in the case of those who have once been enlightened, who have tasted the heavenly gift, and have shared in the Holy Spirit, 5 and have tasted the goodness of the word of God and the powers of the age to come, 6 and then have fallen away, to restore them again to repentance, since they are crucifying once again the Son of God to their own harm and holding him up to contempt.
Then remember also that the water still flowed at Meribah and Moses continued to lead Israel to the promise land but he himself did not enter into the inheritance.