# Likewise

This word signals the analogy of the tongue to the horses' bits and the ships' rudders mentioned in the previous verses. Alternate translation: "In the same way"

# boasts great things

Here "things" is a general word for everything about which these people are proud.

# Notice also

"Think about"

# how small a fire sets on fire a large forest

In order to help people understand the harm that the tongue can cause, James speaks of the harm that a small flame can cause. Alternate translation: "how a small flame can start a fire that burns many trees"