It is He (Allah) Who has named you Muslims both before and in this (the Quran) [Ch.22:78]
O you have believed, be pious to Allah with His true piety, and definitely do not die except as Muslims.[Ch.3:102]
Say (O Muhammad SAW): "O people of the Scripture (Jews and Christians): Come to a word that is just between us and you, that we worship none but Allah, and that we associate no partners with Him, and that none of us shall take others as lords besides Allah. Then, if they turn away, say: "Bear witness that we are Muslims."
Ibrahim (Abraham) was neither a Jew nor a Christian, but he was a true Muslim Hanifa (Islamic Monotheism - to worship none but Allah Alone) and he was not of Al-Mushrikun.[Ch.3:67]
(Ibrahim A.S's deen was called Deen-e-Hanif the early face of Islam, Do not consider him a Hanifi Muslim coz, Imam Abu Hanifa R.A was not born when Quran was revealed).
And who is fairer in speech than he who calls to Allah, and does righteousness, and says, "Surely I (myself ) am one of the Muslims"? (i.e., those who surrender (to Allah) [CH.41:33]