When we read the book of the Acts of the Apostles, we see farther that unanimity is one of the fruits of the Holy Spirit, which descended on the apostles the day of the Pentecost and acting powerfully after that in the Church. But we see in this verse that there was already unanimity among the apostles before the descent of the Holy Spirit. It isn’t a contradiction, but rather dynamism. If there was no unanimity among the followers, then the Pentecost wouldn't have probably taken place. But they inherit the real, genuine, imperishable unanimity, at the moment they see "tongues of fire ", coming upon each of them. Where then does this "preliminary" unanimity come from? Did the Pentecost take place only because of a fortuitous coincidence of the humors and ideas of some persons? Of course not. They aren't adventitious people, but rather followers of the Christ, who educated them Himself during three years. They are the same followers, to whom He manifested Himself by His resurrection and "opened the spirit to the understanding of the Scriptures ". And, finally, they are the same apostles, to whom He said, blowing on them: "Accept the Holy Spirit". Thus, even this "little" unanimity is the result of God's work.