What does Psalm 21:3 mean?

In this verse the congregation celebrates the blessings God has given their king, David. Not only did the Lord meet David with rich blessings but He also placed "a crown of fine gold" on his head. The reference to a crown likely means his victory in answer to prayer seemed like a second coronation. Although believers do not wear a visible crown, we are a royal priesthood (1 Peter 2:9) and we will receive the crown of righteousness when Jesus returns if we have loved His appearing (2 Timothy 4:8) – if we are among those who will rejoice when He returns.

When Abram defeated the five kings who took hostages from Sodom, Melchizidek, priest of the Most High God, met him and blessed him. Later, the king of Sodom offered Abram a reward, but Abram refused. He said he had made an oath to the Lord, the possessor of heaven and earth, that he would not take anything from the king of Sodom so that the king could not say he had made Abram rich (Genesis 14:17–24). Before Joshua and his army won the battle of Jericho, the Lord met him (Joshua 5:13–15). Believers may rejoice in knowing that the Lord goes before us into battle (Matthew 28:19–20; John 10:4; 1 John 4:3–4).