Whether there are two filiations in Christ?

❌ Objection 1 : It would seem that there are two filiations in Christ. For nativity is the cause of filiation. But in Christ there are two nativities. Therefore in Christ there are also two filiations.

❌ Objection 2 : Further, filiation, which is said of a man as being the son of someone, his father or his mother, depends, in a way, on him: because the very being of a relation consists "in being referred to another"; wherefore if one of two relatives be destroyed, the other is destroyed also. But the eternal filiation by which Christ is the Son of God the Father depends not on His Mother, because nothing eternal depends on what is temporal. Therefore Christ is not His Mother's Son by temporal filiation. Either, therefore, He is not her Son at all, which is in contradiction to what has been said above (Articles [3],4), or He must needs be her Son by some other temporal filiation. Therefore in Christ there are two filiations.

❌ Objection 3 : Further, one of two relatives enters the definition of the other; hence it is clear that of two relatives, one is specified from the other. But one and the same cannot be in diverse species. Therefore it seems impossible that one and the same relation be referred to extremes which are altogether diverse. But Christ is said to be the Son of the Eternal Father and a temporal mother, who are terms altogether diverse. Therefore it seems that Christ cannot, by the same relation, be called the Son of the Father and of His Mother Therefore in Christ there are two filiations.