because he struck the rock twice rather than speak to the rock as God told him , if you willing
“And
there was no water for the congregation: and they gathered themselves together against Moses and against Aaron…….( the people complain against them ) And Moses and Aaron went from the presence of the assembly unto the door of the tabernacle of the congregation, and they fell upon their faces: and
the glory of the LORD appeared unto them.
And
the LORD spake unto Moses, saying, Take the rod, and gather thou the assembly together, thou, and Aaron thy brother, and
speak ye unto the rock before their eyes; and it shall give forth his water, and thou shalt bring forth to them water out of the rock: so thou shalt give the congregation and their beasts drink.
And
Moses took the rod from before the LORD, as he commanded him. And Moses and
Aaron gathered the congregation together before the rock, and
he said unto them, Hear now, ye rebels; must we fetch you water out of this rock?
And
Moses lifted up his hand, and with his rod he smote the rock twice: and the water came out abundantly, and the congregation drank, and their beasts also.
And
the LORD spake unto Moses and Aaron, Because ye believed me not, to sanctify me in the eyes of the children of Israel, therefore ye shall not bring this congregation into the land which I have given them.”
Numbers 20:2, 6-12 KJV
and so
“And Moses went up from the plains of Moab unto the mountain of Nebo, to the top of Pisgah, that is over against Jericho. And the LORD shewed him all the land of Gilead, unto Dan, and all Naphtali, and the land of Ephraim, and Manasseh, and all the land of Judah, unto the utmost sea, and the south, and the plain of the valley of Jericho, the city of palm trees, unto Zoar. And the LORD said unto him, This is the land which I sware unto Abraham, unto Isaac, and unto Jacob, saying, I will give it unto thy seed: I have caused thee to see it with thine eyes, but thou shalt not go over thither. So Moses the servant of the LORD died there in the land of Moab, according to the word of the LORD. And he buried him in a valley in the land of Moab, over against Beth-peor: but no man knoweth of his sepulchre unto this day. And Moses was an hundred and twenty years old when he died: his eye was not dim, nor his natural force abated. And the children of Israel wept for Moses in the plains of Moab thirty days: so the days of weeping and mourning for Moses were ended.”
Deuteronomy 34:1-8 KJV
Several correlating and relevant other verses but you see Moses disobeyed Gods command and sin is death. Because of this ordination Moses wasn’t pardoned for that
“Behold, I send an
Angel before thee,
to keep thee in the way, and to bring thee into the place which I have prepared. Beware of him, and obey his voice, provoke him not; for he will not pardon your transgressions:
for
my name is in him.”
Exodus 23:20-21 KJV
the law is Gods word , but it’s coming through the angels like at the burning bush
“And
the angel of the LORD appeared unto him in a flame of fire out of the midst of a bush: and he looked, and, behold, the bush burned with fire, and the bush was not consumed.”
Exodus 3:2 KJV
Or like the unforgiving angel that led then through the desert and wouldn’t even forgive Moses one frustration and disobedience God said “ speak to the rock “ and Moses “ struck the rock twice “ and the angel who had rule over those people would not pardon anyone’s transgression it’s why every sinner under Moses law died and didn’t rise up again like Jesus he never sinned but Moses had priorly killed a man before called and then after he disobeyed just the one time there the law can’t save even e mediator
disposition of no pardon because after God spoke the commandments the first said do not make images to worship and serve the first thing they did was build a golden cow to worship and bow to and call thier god
