Congratulations on the opportunity to play in your church band! As a church bassist myself, I can definitely give you some pointers. One thing that's important to keep in mind is that you are there to support the music ministry and enhance the worship experience for the congregation. It's not about showing off your skills or trying to stand out. Regarding the Psalms 150:4 verse, that's a great reminder that playing music in church is a form of praise and worship. As a member of the apostolic church, we believe that music can be a powerful way to connect with God and express our devotion. So, approach your role in the church band with humility, gratitude, and a desire to serve. Best of luck and I hope you have a great experience!