If you have done the Precept Upon Precept study on Kinsman Redeemer, then you probably already have a key word symbol for marking avenge or blood avenger. But here is a suggested way to mark these words if you don’t. I try to use related symbols to mark related words. They could even be marked exactly the same way if you wanted.
Remember, when doing Inductive Bible Study and marking key words, the symbol or color you use is not important. Making it your own is important. It is a tool to help you dig deeper into God’s Word, slow down and read with purpose, and, most importantly, learn more about God.
Go forth and mark key words!