Ephesians 5:19 & 20

"Speak to one another with psalms, hymns and spiritual songs. Sing and make music in your heart to the Lord, always giving thanks to God the Father for everything, in the name of our Lord Jesus Christ." NIV translation

Now, Paul encourages us to be the light to fellow believers and to lift them up in our worship. When we come to worship in groups, that prayer and praise can help to build up our brothers and sisters in Christ. He reminds us to give thanks for everything and that includes the trials that we all face. 

When others see us in worship and they know that we have had some trials and may even be going through some at that time, they will also learn to praise God in the midst of their storms.

Ephesians 5:21

"Submit to one another out of reverence for Christ." NIV translation

The word "submit" here causes some confusion for many people as a better translation would be "respond". Submit makes us think of doing what someone tells us and that is not what it is talking about here. Respond is where we do something based on what someone else has done. Paul is telling the Ephesians (and us as well) to respond to other people in the same way that Christ would and that is with love. We do this not because of the person we are dealing with but because of Jesus and what he has done for us. We submit to Him and respond to others as He would.