en_tn/gen/31/35.md

my master

Calling someone "my master" is a way of honoring them.

that I cannot stand up before you

"because I am unable to stand up in your presence"

for I am having my period

This refers to the time of the month when a woman bleeds from her womb. (See: rc://en/ta/man/jit/figs-euphemism)