If “sola scriptura” were so important the apostles would have discussed it at length in the scriptures…
If doctrines like the “trinity” or “hypostasis” were so important the apostles would have mentioned them explicitly in the scriptures…
(We could go on and on).
**Sorry my friend, but the apostles did mention these concepts.
For Sola Scriptura: **
2 Timothy 3:16-17 - All Scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness, that the man of God may be complete, thoroughly equipped for every good work.
**As mentioned here by Paul, scripture makes us whole. Scripture equips us for EVERY good work. Not just for some good works.
For support of the Trinity, the Bible firmly supports this belief:**
Matthew 28:19 - Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost:
1 Corinthians 8:6 - But to us [there is but] one God, the Father, of whom [are] all things, and we in him; and one Lord Jesus Christ, by whom [are] all things, and we by him.
John 1:1 - In the beginning was the Word, and the Word was with God, and the Word was God.
John 1:14 - And the Word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father,) full of grace and truth.
1 John 5:7-8 - For there are three that bear record in heaven, the Father, the Word, and the Holy Ghost: and these three are one.
I could go on…
And for hypostasis:
Hebrews 1:3, “And He is the radiance of His glory and the exact
representation of His nature, and upholds all things by the word of His power.
When He had made purification of sins, He sat down at the right hand of the
Majesty on high.”
Here, the noun "Nature” is hypostasis.
And more verses:
John 1:14, “And the Word became flesh, and dwelt among us, and we saw
His glory, glory as of the only begotten from the Father, full of grace and
truth.”
Romans 1:1-4, “Paul, a bond-servant of Christ Jesus, called as an apostle,
set apart for the gospel of God, which He promised beforehand through His
prophets in the holy Scriptures, concerning His Son, who was born of a
descendant of David according to the flesh who was declared the Son of God
with power by the resurrection from the dead, according to the Spirit of
holiness, Jesus Christ our Lord.”
Romans 8:3, “For what the Law could not do, weak as it was through the
flesh, God did: sending His own Son in the likeness of sinful flesh and as an
offering for sin, He condemned sin in the flesh.”
**Since there are scriptures supporting the concepts you listed, they ARE important to the core Christian foundation of faith.
My point is this. The belief in Mary’s perpetual virginity is neither supported in the scriptures nor has any bearing on salvation. I think this is a bigger issue made by some than it should be (Catholic and Protestant).**