The word "you" continues to refer to believers. The word "we" continues to refer to the writer and the readers who are believers. (See: [[rc://en/ta/man/translate/figs-you]] and [[rc://en/ta/man/translate/figs-inclusive]])
Having contrasted the Israelites' experience at Mount Sinai with the believers' experience after Christ died, the writer reminds believers that they have the same God who warns them today. This is the fifth main warning given to believers.
The implicit information can be stated explicitly. Alternate translation: "if the people of Israel did not escape judgment" (See: [[rc://en/ta/man/translate/figs-explicit]])
Disobeying God is spoken of as if it were changing direction and walking away from him. Alternate translation: "if we disobey the one who is warning" (See: [[rc://en/ta/man/translate/figs-metaphor]])