Titus 3:8, "This is a trustworthy saying. And I want you to stress these things, so that those who have trusted in God may be careful to devote themselves to doing what is good. These things are excellent and profitable for everyone.”

Interesting points:
1. In this verse Paul describes Verses 4 to 7 as "trustworthy." As we see from many of his writings, Paul emphasized greatly this concept of salvation by grace (through faith) rather than by earning salvation through works. This is undoubtedly a result of his personally experiencing God's grace on the road to Damascus as captured in Acts 9. As he wrote in Ephesians 2:8–9, Paul knew his changed life was not the result of his many works as a devout Jew, but as the result of God's grace.

2. Paul told Titus to "stress" these teachings as they are essential truths that cause believers to make a purposeful commitment to doing good deeds. These good works do not earn salvation; good works are the result of salvation. A person changed by God will seek to live for Him.

3. Paul affirmed that “these things” – meaning resulting actions and good works -- were "excellent and profitable for everyone". Therefore healthy, sound doctrine was beneficial to the church as it resulted in much spiritual fruit whereas the teachings of the false teachers on Crete were poisonous to the faith of their followers and profited no one spiritually.

Application.
Brothers, Paul’s words “This is a trustworthy saying” about Verses 4-7 speak clearly to us so as to eliminate any confusion about this important truth:
a) God has saved us because He chose to do so, b) He buried our sins with Jesus’ death forever and
c) the Holy Spirit transforms us, renewing us, d) so that we can we become a holy people that can fulfill the work He has planned in advance for us to do.
Our good works are not what saves us – God did – but they are a result of His transformative work in us.
This truth is a wake-up call. Just like a good tree bears good fruit when pruned by the Master, we who are saved should not be lacking in good works.
If we are lacking in good works then we should assess why!!! Do refuse to apply God’s Word in our lives? Are we obstinate in the face of His discipline? Do we ignore His calling on our lives?