1 Kings 1:36

And Benaiah the son of Jehoiada answered the king, and said, Amen: the Lord God of my lord the king say so too.

Cross-reference

In Deuteronomy 27:15-26, the people respond 'Amen' to each curse, mirroring Benaiah's 'Amen' as an affirmation of David's command.

In Jeremiah 11:5, Jeremiah responds 'Amen, O Lord' to God's promise, similar to Benaiah's 'Amen' to David.

Jeremiah 28:6 has Hananiah saying 'Amen! May the Lord do so' — directly parallel to Benaiah's 'Amen! May the Lord declare it'.

In 1 Corinthians 14:16, the congregation says 'Amen' to a prayer, reflecting the same responsive use of 'Amen' as Benaiah.