Призывая

12 Ученики́ отпра́вились в путь и пропове́довали лю́дям,

12 [Students, Disciples] [departed, set off, we went] [at, in, of, on] [path, the way, way] and [preached, proclaimed] people,

призывая их к покая́нию.

призывая [them, their] [to, for, by] repentance.

So they went out and proclaimed that people should repent.
Mark 6:12 ESV

And they went out,
and preached that men should repent.
Mark 6:12 KJV