Christ is the completion of the law for righteousness unto every one that believes. … For this reason the blessed Baptist is brought forward, as one who had attained the foremost place in legal righteousness, and to a praise so far incomparable. And yet even thus he is ranked as less than one who is least: “for the least, He says, is greater than he in the kingdom of God.” But the kingdom of God signifies, as we affirm, the grace that is by faith, by means of which we are accounted worthy of every blessing, and of the possession of the rich gifts which come from above from God. For it frees us from all blame; and makes us to be the sons of God, partakers of the Holy Ghost, and heirs of a heavenly inheritance.
St. Cyril of Alexandria
Sermon XXXVIII [Commentary on Luke]