Sacred Tradition and the Bible are not different or competing revelations. They are two ways that the Church hands on the gospel. Apostolic teachings such as the
Trinity,
infant baptism, the inerrancy of the Bible, purgatory, and
Mary’s perpetual virginity have been most clearly taught through Tradition, although they are also implicitly present in (and not contrary to) the Bible.
I cannot find any of those things to be “implicitly present in...the Bible”....except perhaps “the inerrancy of the Bible” itself, though what constitutes “the Bible” can be disputed.
They are all in fact, contrary to Bible teachings.
The
trinity violates monotheism by having one God split into three different bodies which can be separate in time and space, and who can supposedly think and act independently. That concept is definitely NOT biblical. (John 17:3; 1 Corinthians 8:5-6)
Infant baptism is definitely NOT supported in the Bible, though the age of the candidate is not mandated, they must be of age to understand what Jesus taught and be able to decide for themselves that they want to be a follower of Christ. No one can dedicate a person to God as a “Christian”, but the person themselves. It carries a weight of personal responsibility. (Matthew 28:19-20; Acts 2:41; Acts 8:12)
Purgatory finds NO support in scripture, which speaks of death as a “sleep”, not a conscious existence in any other realm. (John 11:11-14) Going to heaven, hell or purgatory was not something Jesus taught and a bit of research into “Gehenna” (which Jesus spoke about) will reveal that to a Jew it meant nothing like what the RCC turned it into.(Ecclesiastes 9:5; 10)
The perpetual virginity of Mary is borrowed from ancient mother worship which originated in Babylon with the mother of Nimrod. (if you do some research, it will become obvious)
Jesus had siblings as the scriptures state.
This is clearly indicated in the Gospels. Luke’s Gospel refers to Jesus as Mary’s “firstborn,” implying that she later bore other children. (Luke 2:7)
Mark’s Gospel reports that some in the city of Nazareth equated Jesus with his siblings, regarding him as nothing special. They asked.....
“Is not this the carpenter, the son of Mary, the brother of James, and Joseph, and Jude, and Simon? are not also his sisters here with us? And they were scandalized in regard of him.” (Mark 6:3 Douay) His male siblings are even named.
Matthew 12:46...
"46 As he was yet speaking to the multitudes, behold his mother and his brethren stood without, seeking to speak to him.
47 And one said unto him: Behold thy mother and thy brethren stand without, seeking thee.
48 But he answering him that told him, said: Who is my mother, and who are my brethren?
49 And stretching forth his hand towards his disciples, he said: Behold my mother and my brethren.
50 For whosoever shall do the will of my Father, that is in heaven, he is my brother, and sister, and mother." (Douay)
What is translated "brethren" here has the primary meaning of "a sibling or half sibling" (which makes John 7:5...
"For neither did his brethren believe in him" an admission that his siblings had not at that time believed him to be the Messiah. He was just Jesus, their older brother.)
Why would Jesus' mother be there seeking to speak with him accompanied by those who were already believers? You can see that he contrasted his family members with his followers, so these were in fact his fleshly siblings and his mother.
The Bible itself tells us to hold fast to Tradition, whether it comes to us in written or oral form (2 Thess. 2:15, 1 Cor. 11:2).
What traditions was Paul speaking about?
2 Thessalonians 2:13-14 says...
"Whereunto also he hath called you by our gospel, unto the purchasing of the glory of our Lord Jesus Christ.
14 Therefore, brethren, stand fast; and hold the traditions which you have learned, whether by word, or by our epistle." (Douay)
By saying "our gospel" and "our epistle" Paul is speaking about the teachings of the apostles.....not their supposed successors.
1 Corinthians 11:2...
"Now I praise you, brethren, that in all things you are mindful of me: and keep my ordinances as I have delivered them to you." (Douay)
From Jesus' own words it is clear that "tradition" that comes from outside of scripture...that is NOT from himself or the apostles, and which is in direct contradiction to those teachings, is to be disregarded.
"All scripture, inspired of God, is profitable to teach, to reprove, to correct, to instruct in justice,
17 That the man of God may be perfect, furnished to every good work." (2 Timothy 3:16-17 Douay)
It says "all scripture"....NOT scripture and man-made traditions that contradict God's word. (Matthew 15:6-9)
Allow the Bible to speak for itself.....it doesn't lie...but men do.