Sabbath keepers; Where is it written Christians are bound to the conditions of the old covenant?

okay hogie, did it ever say we were not still bound? do these supernatural forever promises between humans and God have an expiry date? jeez... do you have scriptural evidence? i mine, cmon, stop pondering our religion or critiquing it get off your and try to feed some starving children, volunteer or something cool with your life rather than asking silly questions about other people's religions.