1) The passage encourages the reader to make God their shepherd as God cares for and provides for humans even more than dogs.
2) It notes that dogs who obey instructions are rewarded with privileges like riding in cars and getting good food and homes, suggesting humans can also receive blessings by following God's instructions.
3) The passage quotes John 3:16 to remind the reader that through believing in Jesus, one can have everlasting life rather than perish, as God loves the world so much he gave his son.