At the start of this week I read the eighty-fourth Psalm during the Lord’s Supper. I don’t think my thoughts were very clear then, and I want to attempt to share them here.
The psalm starts out with the Chief Musician, which suggests it's at least partly Messianic.
As the Psalm opens, it tells us about an altar that's apparently abandoned: the sparrow and the swallow feel safe in building their nests and raising their young on it. We're told it's the altar of the Lord of Hosts, but it's apparently no longer in use (Psalm 84:3).
The unused altar suggests to us the need for sacrifice is over. It brings us to the state of affairs we see in Hebrews 10: one sacrifice has put away sins forever (Hebrews 10:11–13).
As we look further in the Psalm we come to two types of person: there are those who dwell in the Lord’s house (Psalm 84:4), and there is "the Man" whose strength is the Lord (Psalm 84:5). We understand it's because of this one Man that "they" can dwell in God’s house.
What is the prayer of those dwelling in God's house? It's "Look on the face of Your Annointed” (Psalm 84:9). That's our prayer too – "Don't look at me Lord, look at Him." This is our acceptance with God: He has looked in Christ and seen everything that He could look for in man. Christ is our "wisdom from God, and righteousness, and holiness, and redemption” (1 Corinthians 1:31).
J. N. Darby said, “The Christian is humble... because he has given up seeking good in himself to adore the One in whom there is nothing else” (J. N. Darby, "On Mysticism", Collected Writings, Vol. 32). That is really what it means to be “in Christ” – having no righteousness of my own (Philippians 3:9).
Finally the Psalm ends with a blessing: blessed is the Man who trusts in God (Psalm 84:12). The Pharisees accused Christ of trusting in God (Matthew 27:43). We bless that same Man.