“But you are not to be called ‘rabbi,’ for you have one teacher, and you are all brethren. And call no man your father on earth, for you have one Father, who is in heaven. Neither be called ‘masters,’ for you have one master, the Christ” (Matt. 23:8–10).
Throughout the world, some people have been tempted to look upon religious leaders who are mere mortals as if they were an individual’s supreme source of spiritual instruction, nourishment, and protection. The tendency to turn mere men into “gurus” is worldwide. This was also a temptation in the Jewish world of Jesus’ day, when famous rabbinical leaders, especially those who founded important schools, such as Hillel and Shammai, were highly exalted by their disciples. It is this elevation of an individual man —the formation of a “cult of personality” around him— of which Jesus is speaking when he warns against attributing to someone an undue role as master, father, or teacher.
Perhaps the most pointed New Testament reference to the theology of the spiritual fatherhood of priests is Paul’s statement, “I do not write this to make you ashamed, but to admonish you as my beloved children. For though you have countless guides in Christ, you do not have many fathers. For I became your father in Christ Jesus through the gospel” (1 Cor. 4:14–15).
John said, “My little children, I am writing this to you so that you may not sin; but if any one does sin, we have an advocate with the Father, Jesus Christ the righteous” (1 John 2:1); “No greater joy can I have than this, to hear that my children follow the truth” (3 John 4). In fact, John also addresses men in his congregations as “fathers” (1 John 2:13–14).
By referring to these people as their spiritual sons and spiritual children, Peter, Paul, and John imply their own roles as spiritual fathers. Since the Bible frequently speaks of this spiritual fatherhood, we Catholics acknowledge it and follow the custom of the apostles by calling priests “father.” Failure to acknowledge this is a failure to recognize and honor a great gift God has bestowed on the Church: the spiritual fatherhood of the priesthood.
Matthew 23:9 is part of a larger passage in which Jesus comments on the example of the scribes and Pharisees. St. Matthew devotes the entire chapter to this discourse. While reading the entire chapter is most helpful in understanding this passage, the first 12 verses provide adequate context to begin the discussion: Then said Jesus to the crowds and to his disciples, "The scribes and the Pharisees sit on Moses' seat; so practice and observe whatever they tell you, but not what they do; for they preach, but do not practice. They bind heavy burdens, hard to bear, and lay them on men's shoulders; but they themselves will not move them with their finger. They do all their deeds to be seen by men; for they make their phylacteries broad and their fringes long, and they love the place of honor at feasts and the best seats in the synagogues, and salutations in the market places, and being called rabbi by men. But you are not to be called rabbi, for you have one teacher, and you are all brethren. And call no man your father on earth, for you have one Father, who is in heaven. Neither be called masters, for you have one master, the Christ. He who is greatest among you shall be your servant; whoever exalts himself will be humbled, and whoever humbles himself will be exalted."
In the remainder of the chapter, Jesus expresses disgust with the many hypocrisies of the scribes and Pharisees. He ends by giving a lament over Jerusalem for killing the prophets and ignoring the Word of God.
As in other places of Scripture, Jesus emphasizes here that one who seeks to be a teacher, father, or master must serve the rest, and not seek their own glory or power. He does this by introducing a second authority, which would be rooted in the New Covenant ratified in His blood. In Matthew 23:9-10, Jesus identifies fatherhood with the Father in heaven, and authority with the authority He received from His Father. In a different way, He had already done this in Matthew 10:40. In that passage, Jesus commissioned His twelve apostles and sent them out in His name. Jesus told them, "He who receives you receives me, and he who receives me receives him who sent me." In this way, the apostles knew they acted not on their own authority, but on the authority of Jesus Christ, the Son of God.
We cannot interpret Matthew 23:9 as prohibiting reference to dads or priests as "fathers" without contradicting other scriptural passages in which the word "father" is used. Such an interpretation would render the commandment "honor your father" meaningless and would diminish the authority of the apostles and their successors. Admittedly, it is easier for a Protestant to accept the title "father" for those who beget children biologically. To use the title for others would imply the recognition of Jesus' intention to establish a ministerial priesthood through the Sacrament of Holy Orders.
By sharing in the high priesthood of Christ, bishops and priests share in the attributes of the Father. As there is no father but the one Father in heaven, and no teacher or master but Christ, we properly understand that these men, having been commissioned by Christ to act in His person, also represent the Father, whom the Son reveals (cf. Jn. 1:14-18). Insofar as they uniquely participate in the spiritual begetting of God's children, bishops and priests are our fathers. For they share in the mission of Christ who reveals the eternal Father. St. Ignatius of Antioch, who knew the apostles, expressed this well when he wrote: "Let everyone revere... the bishop as the image of the Father" (as quoted in Catechism, no. 1554). All fatherhood comes from God, as St. Paul teaches in Ephesians 3:14-15: "For this reason I bow my knees before the Father, from whom every family in heaven and on earth is named...." In this context, we can explain the fatherhood of a priest. Rather than bearing the authority of man and providing an example of pride as the scribes and Pharisees, a priest bears the authority of God in the New Covenant sealed in the blood of Christ. With such a commission, the priest is obligated to live in service to others. Thus, whether we are speaking of biological fathers or spiritual fathers, we understand men in both circumstances to be participating in the one fatherhood of God. This is a gift from God, and must be lived in a godly manner. Only in this way can they raise their children to be children of light.
The Catholic Church is not a cult of personality (like the patriarchs of the Orthodox). When I call a priest "father", it is an honorific referring to his office, not his person. I know that at any time the Church might replace this priest with another priest, perhaps from the Philippines or Nigeria, and I will call him "father" as well. I will not switch parishes or move to follow a particular priest, because they all perform the same Catholic rituals and follow the same Catholic creed.