Исповедующих

6 Исповедующих свои́ грехи́ он крести́л в реке́ Иорда́н.

6 Исповедующих their sins he [baptize, baptized, baptizing] [at, in, of, on] [river, the river] Jordan.

and they were baptized by him in the river Jordan,
confessing their sins.
Matthew 3:6 ESV

And were baptized of him in Jordan,
confessing their sins.
Matthew 3:6 KJV