When one walks up the walkway out of Waverly Station in Edinburgh, Scotland, one of the first sights that greets him is that of Edinburgh Castle silhouetted against the highland sky. This picture of strength, safety and endurance is an impressive sight. It provides a good illustration of the safe refuge enjoyed by all of God's elect in Christ. The Psalmist said, "The Lord is my rock, and my fortress, and my deliverer; my God, my strength, in whom I will trust; my buckler, and the horn of my salvation, and my high tower." (Psalm 18:2) This ancient castle also provides a good picture of the place and danger of each one before faith in Christ. It is built upon an extinct volcano. As sinners, we stood in the face of offended holiness, against a God angry with our wickedness, condemned with the judgment and wrath of God against us ready and sure to erupt at any time. But Christ came and took our place, bore our sin in His own body on the tree, turned the wrath of God away from us by His propitiatory sacrifice and brought in everlasting righteousness, His righteousness which is imputed to us. On the mount of Calvary the judgment of God erupted against Christ and He endured it all in the place of His people. He has made peace by the blood of His cross and reconciled us to God. The hot lava of divine justice cooled itself to satisfaction on Christ and now becomes the very ground upon which our hope rests. He is faith and just to forgive us. Another amazing thing about Edinburgh Castle is that the castle and stones of which it is built seem to just grow up out of the rock. It is like they are one. Likewise, the least believer dwells in perfect safety because of their relationship to the Rock. We are not only built upon the Rock, not only hidden in the cleft of the Rock, but are by spiritual and legal union one with the Rock. As Paul says, "That Rock is Christ!" Christ is our Rock, our High Tower, our Fortress...our Castle! But this is no fairy tale. It is the Word of the unchanging God who cannot lie. Castles seem also to symbolize royalty. So it is in Christ that believers are "kings and priests unto God." "Joint-heirs" with Christ who is the King of Kings and Lord of Lords.