The Greek verb “ἐθίζω”

Limited to Lk. 2:27, the Greek verb “ethizo” meant “accustom.”  Joseph and Mary took “the child Jesus to the temple ‘to accomplish the customary requirements of the law regarding him’” (Spicq, 1:409).  The words “kata to eithismenon, literally, ‘according to the custom of the law’ is the constant way of referring to a legal requirement” (ibid).