Strong's #1485: ethos (pronounced eth'-os)
from 1486; a usage (prescribed by habit or law):--custom, manner, be wont.
Thayer's Greek Lexicon:
2) usage prescribed by law, institute, prescription, rite
Part of Speech: noun neuter
Relation: from G1486
Citing in TDNT: 2:372, 202
This word is used 12 times:
Luke 1:9: "According to the custom of the priest's office, his lot was to burn incense when he went"
Luke 2:42: "to Jerusalem after the custom of the feast."
Luke 22:39: "And he came out, and went, as he was wont, to the mount"
John 19:40: "the spices, as the manner of the Jews is to bury."
Acts 6:14: "and shall change the customs which Moses delivered us."
Acts 15:1: "and said, Except ye be circumcised after the manner of Moses, ye cannot be saved."
Acts 16:21: "And teach customs, which are not lawful for us to receive,"
Acts 21:21: "neither to walk after the customs."
Acts 25:16: "It is not the manner of the Romans to deliver any man"
Acts 26:3: "to be expert in all customs and questions which are among"
Acts 28:17: "and brethren, though I have committed nothing against the people, or"
Hebrews 10:25: "the assembling of ourselves together, as the manner of some is; but exhorting"