They made a calf. — The fact is stated in a compound word which is not found in the LXX. version, and which St. Stephen apparently coined for the purpose.
Rejoiced in the works of their own hands. — The verb expresses specially the joy of a feast, as in Luke 15:23-24; Luke 15:29; Luke 16:19; and is therefore specially appropriate for what is related in Exodus 32:5-6. The tense “were rejoicing” expresses the frequency or continuance of the sin.