Some simple, one-shot ideas here. Although one of them might be fightin' words if we read it too closely. Sadly, there’s nothing directly about Mary and Martha.

Colossians 1:15-28

He [Christ] is the head of the body, the church; he is the beginning, the firstborn from the dead, so that he might come to have first place in everything.
— Colossians 1:18

Verse 18 is cited in a footnote to Smalcald Articles, Part 2, Fourth Article (SA 2.4.1 n. 52) where it provides scriptural evidence, along with several verses from Ephesians, that the pope is not the head of the church.

He [Christ] has now reconciled in his fleshly body through death, so as to present you holy and blameless and irreproachable before him, provided that you continue securely established and steadfast in the faith, without shifting from the hope promised by the gospel that you heard, which has been proclaimed to every creature under heaven. I, Paul, became a minister of this gospel.
— Colossians 1:22-23

Verses 22 thru 23 are quoted in Formula of Concord, Solid Declaration, Article 5: Law and Gospel (FC, SD 5.34) as one of several scriptural quotes wherein "Paul attributed to faith not only the access to grace but also the basis for our standing in grace... he attributes everything--the beginning, middle, and end--to faith alone" (SD 5.34).

To them God chose to make known how great among the gentiles are the riches of the glory of this mystery, which is Christ in you, the hope of glory.
— Colossians 1:28

Verse 27 is cited through editorial insert in Formula of Concord, Solid Declaration, Article 8: Person of Christ (FC, SD 8.96) pointing to Paul's statement that Christ in us is a mystery, and calling Christians to not get caught in the trap of figuring out the two natures of Christ and what all that might look like.

TheoThru

The two natures of Christ can indeed be a significant stumbling block for those who think faith is entirely and solely reasonable, so it's helpful that we are also reminded that the life of faith is entirely grace.

How do we attempt to place ourselves as head of the church in place of Jesus?
Where can we reasonably say that reason cannot answer this question?