Take a minute and listen to Ken Ham explain why liberal theology erroneously opposes Genesis 1
http://www.answersingenesis.org/media/audio/answers-daily/volume-054/liberal-theology-now-whered-come-from
http://www.answersingenesis.org/media/audio/answers-daily/volume-054/liberal-theology-now-whered-come-from
For in six days the LORD made heaven and earth, the sea, and all that in them
is, and rested the seventh day: wherefore the LORD blessed the sabbath day,
and hallowed it.
Exodus 20:11