Christian Clement-Schlimm. Christians are called to thank and praise God in all things and circumstances. On the face of it, this might sound like an exceedingly difficult, if not impossible, command. Thankfully, God does not leave Christians guessing on how to do this. Through David's example in Psalm 138, believers are reminded why God is always worthy of thanks and how they can thank Him, even in the midst of suffering and hardship.