The LORD God is our strength. As we here often explain, the reason we keep the all caps in LORD is for an excuse to explain why it’s like that in the Bible sometimes. This is because the verse is specifically referring to God’s name, Jehovah. When you just see it as Lord, that is calling Him Master.
Hey now, look at where we are. You have finished the easy part of the beginner class, meaning you can put what you just learned to practice in the real thing, or you can continue the class and practice the hard questions as well before tackling the entire quiz together.