Bartenura comments on the mishna in Yoma Perek 8(1) that there are five Torah references to affliction of the soul on Yom Kippur. The pessukim in the order in which he quotes them are:
It is a complete day of rest for you, and you shall afflict yourselves. On the ninth of the month in the evening, from evening to evening, you shall observe your rest day.
It is a Sabbath of rest for you, and you shall afflict yourselves. It is an eternal statute.
And on the tenth day of this seventh month, there shall be a holy convocation for you, and you shall afflict your souls. You shall not perform any work.
But on the tenth of this seventh month, it is a day of atonement, it shall be a holy occasion for you; you shall afflict yourselves, and you shall offer up a fire offering to the Lord
And [all this] shall be as an eternal statute for you; in the seventh month, on the tenth of the month, you shall afflict yourselves, and you shall not do any work neither the native nor the stranger who dwells among you.
Why does he quote them out of their order in the Torah?
Thanks to @DonielF who pointed out that that is the order the Gemara quotes them (Yoma 76a).