Originally Posted by Matthew 6:1-6,16-18

"Beware of practising your piety before others in order to be seen
by them; for then you have no reward from your Father in heaven.

"So whenever you give alms, do not sound a trumpet before you, as
the hypocrites do in the synagogues and in the streets, so that they
may be praised by others. Truly I tell you, they have received
their reward. But when you give alms, do not let your left hand
know what your right hand is doing, so that your alms may be done in
secret; and your Father who sees in secret will reward you.

"And whenever you pray, do not be like the hypocrites; for they love
to stand and pray in the synagogues and at the street corners, so
that they may be seen by others. Truly I tell you, they have
received their reward. But whenever you pray, go into your room and
shut the door and pray to your Father who is in secret; and your
Father who sees in secret will reward you.

And whenever you fast, do not look dismal, like the hypocrites, for
they disfigure their faces so as to show others that they are
fasting. Truly I tell you, they have received their reward. But
when you fast, put oil on your head and wash your face, so that your
fasting may be seen not by others but by your Father who is in
secret; and your Father who sees in secret will reward you."