The Greek word antapodidomi

Found only in Lk. 14:14; Rom. 11:35; 12:19; 1 Thess. 3:9; 2 Thess. 1:6; Heb. 10:30, the Greek verb “antapodidomi” meant “recompense,” “repay,” or “reward.”  Kittel (Abridged Edition, p. 167) noted how the prefix on this term “strengthens the idea of recompense.”

Some people cannot “repay” us in this life (Lk. 14:14), but God will offer a “reward” to the appropriate people in eternity (Lk. 14:14).  In Rom. 11:35 this word means “God is unexcelled in benevolent activity” (Exegetical Dictionary of the New Testament, 1:107).  Paul used this term in 2 Thess. 1:6 to describe the “terrible retribution to those who ‘afflict’ the Church” (ibid).  Divine repayment is also the meaning in Rom. 12:19 and Heb. 10:30.