A.T. Robertson Commentary Luke 22:5

"And they were glad, and covenanted to give him money." — Luke 22:5 (ASV)

Were glad (εχαρησαν). Second aorist passive indicative of χαιρω as in Mr 14:11. Ingressive aorist, a natural exultation that one of the Twelve had offered to do this thing.

Covenanted (συνεθεντο). Second aorist indicative middle of συντιθημ. An old verb to put together and in the middle with one another. In the N.T. outside of Joh 9:22 only in Luke (24:9). Luke only mentions "money" (αργυριον), but not "thirty pieces" (Matthew 26:15).