A.T. Robertson Commentary Romans 15:7

"Wherefore receive ye one another, even as Christ also received you, to the glory of God." — Romans 15:7 (ASV)

Receive ye (προσλαμβανεσθε as in 14:1),

received (προσελαβετο, here of Christ as in 14:3 of God). The repetition here is addressed to both the strong and the weak and the "us" (ημας) includes all.