Discovery BoxJeremiah 9:5 
Context9:5 One friend deceives another
and no one tells the truth.
These people have trained themselves 1 to tell lies.
They do wrong and are unable to repent.
Jeremiah 14:20
Context14:20 Lord, we confess that we have been wicked.
We confess that our ancestors have done wrong. 2
We have indeed 3 sinned against you.
1 tn Heb “their tongues.” However, this is probably not a natural idiom in contemporary English and the tongue may stand as a part for the whole anyway.
2 tn Heb “We acknowledge our wickedness [and] the iniquity of our [fore]fathers.” For the use of the word “know” to mean “confess,” “acknowledge” cf. BDB 394 s.v. יָדַע, Qal.1.f and compare the usage in Jer 3:13.
sn For a longer example of an individual identifying with the nation and confessing their sins and the sins of their forefathers see Ps 106.
3 tn This is another example of the intensive use of כִּי (ki). See BDB 472 s.v. כִּי 1.e.
