God overcame the sins of rebellious humans when he began to flood the earth through rain on the 17th of the second Hebrew month. Noah's ark and its eight passengers rested on the mountains of Ararat on the 17th of the seventh month (right in the middle of God's annual Holy period known as the Feast of Tabernacles).

Jesus Christ gained a complete victory over death and the grave when God resurrected him near sunset on Nisan 17

True Christians, however, will gain the ultimate victory over God's adversaries when he resurrects them back to life (Revelation 15:2; 20:4). One of the major themes of the Day of Atonement (commonly referred to as Yom Kippur), which occurs in the seventh Hebrew month on the tenth day, is the binding of Satan (see Revelation 20). Thus, 10 plus 7 equal the number 17, which testifies to Christ's perfect overcoming of Satan.