Malachi 3:17 - "They will be mine, says the LORD Almighty, in the day when I make up my treasured possession."
What does it take to be included as God's "treasured possession?" According to Malachi 3:16, God will make up His treasured possession from "those who feared the LORD and honored His name."
To fear the LORD, we must know who He is - know Him personally. We must be in awe of Him. We also must honor His name. To honor means "to recognize the value of someone or thing and to act accordingly." (Holman Bible Dictionary)
In order to honor God's name, we must know His name/names. When one studies the names of God (and there are so many!), one gets a glimpse of who God really is. When we see God called the LORD in Scripture (all capitals), it is the name YAHWEH (YHWH) or Jehovah - self-existent One who reveals Himself, I AM. That is just one name! Others : Adonai - Lord, Master; Elohim - God, mighty, strong - you get the idea. God's names reveal to us His character, who He is. How can we help but honor His name?
Fear God, honor His name. Be a part of God's treasured possession.