A large percentage of the Mass comes straight from the Bible (or is a small variation on a Biblical passage). For example, the antiphon, “When we eat this Bread and drink this Cup we proclaim your death, Lord Jesus, until you come in glory” is heavily based on 1Cor 11:26. But you do not see a Biblical citation next to this antiphon in the Missal. If someone were not familiar with 1Cor, s/he would have no idea this passage was Biblical.
I wonder if anyone has taken a copy of the Mass and “footnoted” it with all the Biblical citations? This would be a useful resource for apologetical work. Has anyone seen such a thing?