in order to register along with Mary, who was engaged to him, and was with child.
to be taxed with Mary his espoused wife, being great with child.
To be enrolled with Mary, his espoused (married) wife, who was about to become a mother. [Matt. 1:18-25.]
to enrol himself with Mary, who was betrothed to him, being great with child.
He went to be enrolled together with Mary, who was promised to him in marriage and who was pregnant.
in order to be declared, with Mary his espoused wife, who was with child.