James may have been thinking of barley firstfruits offered on Nisan 16, which was the date when Jesus was resurrected, and of the offering of two wheat loaves on the day of Pentecost, when the holy spirit was poured out.
Jakoobus pidas ehk silmas odra uudsevilja, mida toodi ohvrianniks 16. niisanil, kuupäeval, mil Jeesus üles äratati, ning kahe nisuleiva toomist nelipühapäeval, mil valati välja püha vaim.