Matthew 6:5-6

5“When you pray, do not be like the hypocrites; for they love to pray standing in the synagogues and on the street corners, so that they may be seen by others. Amen, I tell you, they have their reward in full!

6But you, when you pray, go into your inner room; and when you have shut your door, pray to your Father who is in secret. And your Father, who sees in secret, shall reward you.