the man Micah had an house of gods - Hebrew, “a house of God” - a domestic chapel, a private religious establishment of his own.
an ephod - (see on Exo 28:6).
teraphim - tutelary gods of the household (see Gen 31:19 and see on Gen 31:26).
consecrated one of his sons who became his priest - The assumption of the priestly office by any one out of the family of Aaron was a direct violation of the divine law (Num 3:10; Num 16:17; Deu 21:5; Heb 5:4).