Psalm 138

The psalmist talks about those who oppose him. Yet by the end of the psalm he petitions God to finish his work in the psalmist's life. That reminded me of Paul's message to the believers in Philippi; "I am confident that the one who began a good work in you will bring it to completion in Christ Jesus."  (Philippians 1:6). Both of these writers expressed their dependence on God to complete the development of faith in our lives.
Stuart