The next word picture for God, is him as the master and we as his servants.
With God as our master we see him as being in charge; he is the boss and directs our activities.
Extending this image to us, there is a need to follow directives, to listen to him and obey him. We do have a choice (free will), however, and can choose to not obey, but that would make us to be an unfaithful servant.
Also, there is also the reminder that we can only truly serve one master: God or something else: be it money, things, a job, a person or relationship, amassing power, attaining prestige, or even leisure.