The 9 Beatitudes - (Matthew 5) - the 9th is for association with Jesus
The 9th Plague of Egypt - (Exodus 10:10) - The 9th plague was 3 days of darkness. After the darkness, God came to Egypt. Judgement came.
The 9th hour - (Mark 15:33) - Jesus died on the cross for our sins. Darkness covered the earth. 3 days later he arose.
The 9th miracle in the Book of John - (Matthew 28:1-7) The resurrection.
The 9 Fruits of the Holy Spirit - (Galatians 5:22)