. Observe

All therefore whatsoever they bid you observe,
that observe and do;
but do not ye after their works:
for they say,
and do not.
Matthew 23:3 KJV

Teaching them to observe all things whatsoever I have commanded you:
and,
lo,
I am with you alway,
even unto the end of the world.
Amen.
Matthew 28:20 KJV

And when they come from the market,
except they wash,
they eat not.
And many other things there be,
which they have received to hold,
as the washing of cups,
and pots,
brasen vessels,
and of tables.
Mark 7:4 KJV