Contradiction with Matthew 6:1
Mark 9:5 shows Peter wanting to build tabernacles to honor Jesus, Moses, and Elijah, which could be seen as seeking public recognition, whereas Matthew 6:1 advises against doing acts to be seen by others.
Matthew 6:1: Take heed that ye do not your alms before men, to be seen of them: otherwise ye have no reward of your Father which is in heaven. [alms: or, righteousness] [of your: or, with your]
Contradiction with Exodus 20:4-5
Mark 9:5 suggests making three tabernacles, which could be seen as creating images, whereas Exodus 20:4-5 warns against making and worshiping carved images.
Exodus 20:4-5: Thou shalt not make unto thee any graven image, or any likeness [of any thing] that [is] in heaven above, or that [is] in the earth beneath, or that [is] in the water under the earth:
Contradiction with Isaiah 42:8
In Mark 9:5, Peter proposed honoring Jesus alongside Moses and Elijah, while Isaiah 42:8 states that God does not share His glory with others.
Isaiah 42:8: I [am] the LORD: that [is] my name: and my glory will I not give to another, neither my praise to graven images.
Contradiction with Acts 10:25-26
Mark 9:5 displays Peter wanting to honor Jesus, Moses, and Elijah by building tabernacles, but in Acts 10:25-26, Peter rejects being revered like a god when Cornelius bows to worship him.
Acts 10:25-26: And as Peter was coming in, Cornelius met him, and fell down at his feet, and worshipped [him].
Contradiction with Romans 1:25
Mark 9:5 suggests elevating Jesus, Moses, and Elijah with tabernacles, which can misplace worship, while Romans 1:25 warns about worshiping creation rather than the Creator.
Romans 1:25: Who changed the truth of God into a lie, and worshipped and served the creature more than the Creator, who is blessed for ever. Amen. [more: or, rather]