“Then Joseph her husband, being a just man, and not willing to make her a publick example, was minded to put her away privily.”
King James Version (KJV)
1:19 A just man - A strict observer of the law: therefore not thinking it right to keep her.
Mt 1:19 Joseph her husband. Betrothal, according to the law (De 22:23,24), made him her husband before marriage. A just [man]. Righteous and humane. To put her away publicly was to expose her to the penalty of death. Probably she had made her defense to him, but her story was so wonderful that he was in doubt. Privily. Give her a bill of divorce. See De 24:1.