Romans 16:19
Everyone has heard about your obedience, so I rejoice because of you; but I want you to be wise about what is good, and innocent about what is evil.
Apostle Paul roll called all his friends who have been with him in the ministry and commended them and he also wrote encouragements to the people of Rome.
The verse mentioned is not new to us (I even know a song about it specifically). In fact, this is the commonest and simplest principle in life that one can grasp whether a Christian or not. For us Christians, once we decided to follow Jesus, we promised Him that we would continuously work on our spiritual life so that our faith may increase. With faith comes good works, but I strongly believe that faith alone CAN NOT get a person to heaven. One has to acknowledge God's grace.
Ephesians 2:8 says,
For it is by grace you have been saved, through faith--and this not from yourselves, it is the gift of God.
Romans 3:24 says,
and all are justified freely by his grace through the redemption that came by Christ Jesus.
God's grace is Jesus Christ, once an individual accepts Him as his Lord and Saviour, he is guaranteed residence in heaven. Meanwhile, as we live here on earth, good works become the product of our faith, therefore we do good to ourselves and to others. We know very well the difference between good and bad therefore we cling to what is pleasing to God and hate what gives delight to the enemy (Romans 12:9).
Just be reminded that at all times, we do good not to satisfy our ego but to give glory to the One who is merciful and gracious.
As Zechariah 4:6 says,
So he said to me, "This is the word of the LORD to Zerubbabel: 'Not by might nor by power, but by my Spirit,' says the LORD Almighty.