What does Psalm 133:2 mean?
Anointing is symbolic of God's protection, which is a notable blessing. David compares the goodness of brotherly unity with that protective gift. He imagines unity as oil running down Aaron's head and onto his beard and the collar of his priestly robes. In Exodus 30 we read that the Lord directed Moses to make a compound of sacred oil, and then anoint and consecrate Aaron and his sons to serve as the Lord's priests. This was not only a solemn occasion but also a joyful one. It was good and pleasant.Christians, too, have been anointed to serve as priests. The Bible pictures oil as a symbol of the Holy Spirit (Zechariah 4). Second Corinthians 1:21–22 affirms that God has anointed us and placed his Spirit in our hearts. The apostle John refers to this anointing as an event with ongoing results (1 John 2:2–7). And the apostle Peter declares that we are a royal priesthood (1 Peter 2:9). Jesus' command for us to love one another (John 13:34–35) in unity (John 17:21) is a holy requirement.