A.T. Robertson Commentary Romans 4:6

"Even as David also pronounceth blessing upon the man, unto whom God reckoneth righteousness apart from works," — Romans 4:6 (ASV)

Pronounceth blessing (λεγε τον μακαρισμον). old word from μακαριζω, to pronounce blessed (Luke 1:48), felicitation, congratulation, in N.T. only here, verse 9; Acts 4:15.