Nourisheth (εκτρεφε). Old compound with perfective sense of εκ (to nourish up to maturity and on). In N.T. only here and Ephesians 6:4.

Cherisheth (θαλπε). Late and rare word, once in a marriage contract in a papyrus. In N.T. only here and 1. Thessalonians 2:7. Primarily it means to warm (Latin foveo), then to foster with tender care as here.

Even as Christ also (καθως κα ο Χριστος). Relative (correlative) adverb pointing back to ουτως at the beginning of the sentence (verse Ephesians 5:28) and repeating the statement in verse Ephesians 5:25.