English to Portuguese Art/Literary Religion

Alguém sabe qual é a forma adotada em português para a expressão halfway covenant?

O contexto é este:

a practice among the Congregational churches of New England, between 1657 and 1662, of permitting baptized persons of moral life and orthodox faith to enjoy all the privileges of church membership, save the partaking of the Lord's Supper. They were also allowed to present their children for baptism.

Half-Way Covenant, religious-political solution adopted by 17th-century New England Congregationalists, also called Puritans, that allowed the children of baptized but unconverted church members to be baptized and thus become church members and have political rights. Early Congregationalists had become members of the church after they could report an experience of conversion. Their children were baptized as infants, but, before these children were admitted to full membership in the church and permitted to partake of the Lord’s Supper, they were expected to also give evidence of a conversion experience. Many never reported a conversion experience but, as adults, were considered church members because they had been baptized, although they were not admitted to the Lord’s Supper and were not allowed to vote or hold office.