Alethos marks a statement or identification as genuine, certain, and in accord with what is so.

The adverb marks assertions as genuine or certain: people identify who someone is, speakers affirm the reality of knowledge or status, and Jesus introduces assured statements. The same usage can qualify an identity claim, as in statements about the prophet or Son of God, or affirm that a message, knowledge, or discipleship is genuine.

1. Affirming a statement or identification as genuine · dominant

   Used with assertions of identity, knowledge, and certainty. In John 4:42 the APB renders the speakers' conclusion that the one they heard “truly is the Savior of the world”; in John 6:14 and John 7:40 it presents crowd identifications of “the prophet,” while Mark 15:39 presents the centurion's identification of the man as “the Son of God.” The same adverb marks the reality of the word of God in 1 Thessalonians 2:13 and the genuineness of discipleship in John 8:31.

   John 4:42John 6:14John 7:40Mark 15:391 Thessalonians 2:13John 8:31

In the Anselm Project Bible: The APB commonly presents the adverb with “truly” in affirmations and identifications, including John 4:42 and Luke 21:3; Acts 12:11 instead has “for certain.” Because the APB is a whole-verse translation, these renderings show the clause's presentation rather than a fixed English equivalent.