Two of the most significant uses of the number three to my understanding are. "By the mouth of two or THREE witnesses shal the truth be known" .
Also
The highest of the three degrees of glory that a person can attain after this life. Here the righteous will dwell in the presence of God the Father and his Son Jesus Christ.
The glory of the celestial is one, 1 Cor. 15: 40 Paul was caught up to the third heaven, 2 Cor. 12: 2. In the celestial glory there are three heavens.
There were 13 people at the last supper 12 disciples and Jesus.
The number twelve signifies a divine organizational arrangement. For example, there were 12 tribes of Israel and 12 apostles. In each case, the arrangement was instituted by God.
The 50 days of Easter till Pentecost. This is the celebration of Jesus' Resurrection and the finally of the Disicples receiving the Holy Spirit in Tongues of Fire.
the number three in the Bible denotes emphasis. It also indicates intensity.
three million
10 commandments
I am sorry but there are no references to the number 69 in the Holy Scriptures.
Biblically, cats do not represent anything. There are many people believe that black cats represent evil and bad things.
There were 13 people at the last supper 12 disciples and Jesus.
Samuel the prophet.
The number twelve signifies a divine organizational arrangement. For example, there were 12 tribes of Israel and 12 apostles. In each case, the arrangement was instituted by God.
The trinity
The 50 days of Easter till Pentecost. This is the celebration of Jesus' Resurrection and the finally of the Disicples receiving the Holy Spirit in Tongues of Fire.
Numerology
the number three in the Bible denotes emphasis. It also indicates intensity.
3.5 of a meter
three million