Communicating (κοινωνουντες). "Contributing." From κοινωνεω for which see 2. Corinthians 9:13. Paul had raised a great collection for the poor saints in Jerusalem.

Given to hospitality (την φιλοξενιαν διωκοντες). "Pursuing (as if in a chase or hunt) hospitality" (φιλοξενια, old word from φιλοξενος, fond of strangers, φιλος and ξενος as in 1. Timothy 3:2). In N.T. only here and Hebrews 13:2. See 2. Corinthians 3:1. They were to pursue (διωκω) hospitality as their enemies pursued (διωκοντας) them.