Ambrose of Milan
Catena Aurea · Lukasevangelium 1
There was in the days of Herod, the king of Judæa, a certain priest named Zacharias, of the course of Abia: and his wife was of the daughters of Aaron, and her name was Elisabeth. And they were both righteous before God, walking in all the commandments and ordinances of the Lord blameless. And they had no child, because that Elisabeth was barren, and they both were now well stricken in years. The office was that of the Priesthood, as it is said, A certain Priest of the name of Zacharias.
Here their whole character is comprehended in their justice, but it is well said before God, for a man by affecting a popular good-will might seem just to me, but not be just before God, if that justice instead of springing from simpleness of heart, was a mere pretence carried on by flattery. Perfect then is the praise, “that a man is just before God;” for he only is perfect who is approved by Him who cannot be deceived. St. Luke comprehends the action in the commandment, the doing justice in the justification. Hence it follows, walking in all the commandments and justifications of the Lord. For when we obey the command of heaven we walk in the commandments of the Lord, when we observe justice we seem to possess the justification of the Lord. But to be “blameless” we must “provide things honest, not only before God, but also before men”; (Prov. 3:4.) there is no blame when both motive and action are alike good, but a too austere righteousness often provokes censure. A righteous act may also be done unrighteously, as when a man out of ostentation gives largely to the poor, which is not without just cause of blame. It follows, And they had no son, because Elisabeth was barren.