First of all we have to say that this number is usually used as a symbol of victory and it means that God managed to overcome his enemies. Actually, it is known that God was able to overcome the sins of humans when he decided to destroy the earth by flooding it. It was known as the Great Flood that started on the 17th of the 2nd month in the Hebrew calendar that was used in that time. It is also known that the ark of Noah and 8 passengers who were with him made a rest on the Ararat mountains exactly on the 17th of the 7th month.

According to the religious calendar, this day was actually the same day as the 17th of Nisan. Nisan was considered to be the the first month in the religious calendar. This day was also the day of the resurrection of Jesus Christ, who defeated death this way.

Actually, on the 17th of Nisan, he rose from his grave and it was a big day of his resurrection. Before that Jesus was in the grave for 3 days and nights.

According to the Book of Daniel, his beasts had 7 heads and 10 horns, so we have that 7 + 10 gives 17. It is also said in the Bible that the end-time system of devil will have 7 heads and 10 horns

Much more interesting read at link. The Bible is littered with numerology.

https://angelnumber.org/what-does-the-number-17-mean-in-the-bible/

Also, credit to Kent Hovind for this find, but God having "longsuffering" is mentioned exactly 17 times in the Bible among 17 different verses. This quality and the context has to do with God's toleration of evil.