Christian observances of Jewish holidays

Some Christian groups incorporate Jewish holidays into their religious practice, typically altering and reinterpreting their observation to suit a supersessionist theology.

Supporters point to Jesus' Jewish roots, and to the tradition that he and the Apostles observed Jewish holidays. Though some early Christian sects like the Jewish Christian did maintain elements of Judaism, the phenomenon is decidedly modern, originating in 20th century Evangelical movements like Hebrew Roots, Messianic Judaism, and Armstrongism. Many of the Jewish practices appropriated by these groups originated in modern rabbinic Judaism, long postdating early Christianity.

Such Christian observances have been described by some as an offensive form of cultural appropriation and a misinterpretation of Jewish traditions. Within Christianity, critics question the practice's theological consistency and its potential to harm interfaith relationships.