Matthew 6:1 and 5:16

"Be careful not to do your 'acts of righteousness' before men, to be seen by them. If you do, you will have no reward from your Father in heaven."

Be careful not to do your 'acts of righteousness' before men, to be seen by them.
Matthew 23:5-7 "Everything they do is done for men to see: They make their phylacteries wide and the tassels on their garments long; they love the place of honor at banquets and the most important seats in the synagogues; they love to be greeted in the marketplaces and to have men call them 'Rabbi.'"

Matthew 5:16 "In the same way, let your light shine before men, that they may see your good deeds and praise your Father in heaven."

let your light shine before men
1 Corinthians 10:31 So whether you eat or drink or whatever you do, do it all for the glory of God.
Philippians 1:9-11 And this is my prayer: that your love may abound more and more in knowledge and depth of insight, so that you may be able to discern what is best and may be pure and blameless until the day of Christ, filled with the fruit of righteousness that comes through Jesus Christ--to the glory and praise of God.

that they may see your good deeds
Titus 2:14 ... who gave himself for us to redeem us from all wickedness and to purify for himself a people that are his very own, eager to do what is good.

and praise your Father in heaven
Matthew 9:8 When the crowd saw this, they were filled with awe; and they praised God, who had given such authority to men.

NOTES:
Acts of righteousness:
Giving - Matthew 6:2-4
Praying - Matthew 6:5-15
Fasting - Matthew 6:16-18

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984 by International Bible Society. Used by permission. All rights reserved worldwide.