Some of these groups are Assemblies of Yahweh, Messianic Jews, and some congregations of the Church of God (Seventh Day).
[3] Others follow the instructions that Jesus gave to his disciples at the Last Supper before he was crucified, and share bread (usually unleavened) and wine instead of roasted lamb.
Saint Thomas Christians (Nazranis) in the Malabar coast of India (Kerala) have a customary celebration of Pesaha (Passover) at their homes.
The Pesaha tradition may have its origin in their likely Jewish ancestry since they are Christians whose roots can be traced back to the first century AD apostolic missions in Persia and India.
Apollinaris wrote: There are, then, some who through ignorance raise disputes about these things (though their conduct is pardonable: for ignorance is no subject for blame — it rather needs further instruction), and say that on the fourteenth day the Lord ate the lamb with the disciples, and that on the great day of the feast of unleavened bread He Himself suffered; and they quote Matthew as speaking in accordance with their view.
… The fourteenth day, the true Passover of the Lord; the great sacrifice, the Son of God instead of the lamb, who was bound, who bound the strong, and who was judged, though Judge of living and dead, and who was delivered into the hands of sinners to be crucified, who was lifted up on the horns of the unicorn, and who was pierced in His holy side, who poured forth from His side the two purifying elements, water and blood, word and spirit, and who was buried on the day of the Passover, the stone being placed upon the tomb[7]