## false brothers sent in secretly ##

"people who pretended to be Christians who came to cause harm without anyone knowing about it"

## spy ##

secretly look at people to see what they are doing in order to harm them

## liberty ##

freedom (see UDB)

## They desired ##

"These spies desired" or "These false brothers desired"

## to make us slaves to the law ##

"to force us to obey the law." "The law" here refers following Jewish rituals, most importantly circumcision. (See [[rc://en/ta/man/translate/figs-metaphor]])

## yield in submission ##

"submit" or "listen"

## might remain unchanged for you ##

"will continue in you" or "will remain unchanged for you" or "will stay unchanged for you"

## you ##

plural