Psalm 90 is a powerful prayer to God, but also a moment of thanksgiving for God’s powerful work towards the people of Israel, that from generation to generation God continued to save the people of Israel with His strong hand.
Moses, God’s chosen man, to be able to take off and direct the people of Israel from that place where they were slaves for a long time, asked God to continue having mercy.
First of all, this man asks God to satisfy them with mercy. Why? Because there were always failures before God on the part of a people who did not understand what God was doing with them and the powerful works that He was doing.