G4867–συναθροίζω–sunathroizō

And having become clearly conscious [supplied: in himself], he came to the house of Mary, the mother of John who was surnamed Mark, where were many gathered together and praying.

συνηθροισμένοι sunēthroismenoi “gathered together”

whom having brought together, and those who wrought in such things, he said, Men, ye know that our well-living arises from this work,

συναθροίσας sunathroisas “having brought together”