The word(s) "confirm" appears 25 time(s) in 24 verse(s) in Quran in Mohsin Khan translation.

(11) And in their footsteps, We sent 'Îsa (Jesus), son of Maryam (Mary), confirming the Taurat (Torah) that had come before him, and We gave him the Injeel (Gospel), in which was guidance and light and confirmation of the Taurat (Torah) that had come before it, a guidance and an admonition for Al-Muttaqun (the pious - See V.2:2).

(12) And We have sent down to you (O Muhammad صلى الله عليه وسلم) the Book (this Qur'an) in truth, confirming the Scripture that came before it and Muhaymin (trustworthy in highness and a witness) over it (old Scriptures) . So judge among them by what Allah has revealed, and follow not their vain desires, diverging away from the truth that has come to you. To each among you, We have prescribed a law and a clear way. If Allah had willed, He would have made you one nation, but that (He) may test you in what He has given you; so compete in good deeds. The return of you (all) is to Allah; then He will inform you about that in which you used to differ.

(13) And this (the Qur'an) is a blessed Book which We have sent down, confirming (the revelations) which came before it, so that you may warn the Mother of Towns (i.e. Makkah) and all those around it. Those who believe in the Hereafter believe in it (the Qur'an), and they are constant in guarding their Salat (prayers).

(14) Thus truth was confirmed, and all that they did was made of no effect.

(15) And this Qur'an is not such as could ever be produced by other than Allah (Lord of the heavens and the earth), but it is a confirmation of (the revelation) which was before it [i.e. the Taurat (Torah), and the Injeel (Gospel)], and a full explanation of the Book (i.e. laws, decreed for mankind) - wherein there is no doubt - from the Lord of the 'Alamin (mankind, jinn, and all that exists).

(16) Indeed in their stories, there is a lesson for men of understanding. It (the Qur'an) is not a forged statement but a confirmation of (Allah's existing Books) which were before it [i.e. the Taurat (Torah), the Injeel (Gospel) and other Scriptures of Allah] and a detailed explanation of everything and a guide and a Mercy for the people who believe.

(17) Allah blots out what He wills and confirms (what He wills). And with Him is the Mother of the Book (Al-Lauh Al-Mahfuz)

(18) And fulfil the Covenant of Allah (Bai'ah: pledge for Islam) when you have covenanted, and break not the oaths after you have confirmed them - and indeed you have appointed Allah your surety. Verily! Allah knows what you do.

(19) "And my brother Harun (Aaron) - he is more eloquent in speech than me: so send him with me as a helper to confirm me. Verily I fear that they will belie me."

(20) And what We have revealed to you (O Muhammad صلى الله عليه وسلم), of the Book (the Qur'an), it is the (very) truth [that you (Muhammad صلى الله عليه وسلم) and your followers must act on its instructions], confirming that which was (revealed) before it. Verily! Allah is indeed All-Aware, and All-Seer of His slaves.