λαμβάνω, lambano Strong 2983 conveys a 'taking hold of' as Matthew 7:8 when Jesus expresses :
... everyone that asketh, receiveth [Matthew 7:8 KJV]
With the addition of the sun- prefix this becomes ...
We note in the passage containing v6 a lead up to the new reality in which they now find themselves.
hearts may be encouraged,
knit together in love,
full assurance of understanding,
the knowledge of ...