Gave their witness (απεδιδουν το μαρτυριον). Imperfect active of αποδιδωμ, old verb to give back, to pay back a debt (Luke 7:42), but a late omega form instead of the usual απεδιδοσαν. They kept on giving their witness with power after the answer to their prayer (verse Acts 4:31).

Of the resurrection (της αναστασεως). It was on this issue that the Sadducees had arrested them (Acts 4:1-3).