Week - Vine's Expository Dictionary of New Testament Words
Week
[ 1,,G4521, sabbaton ]is used
(a) in the plural in the phrase the first day of the week," Matthew 28:1; Mark 16:2, Mark 16:9; Luke 24:1; John 20:1, John 20:19; Acts 20:7; 1 Corinthians 16:2. For this idiomatic use of the word See ONE, A,
(5);
(b) in the singular, Luke 18:12, "twice in the week," lit., "twice of the sabbath," i.e., "twice in the days after the sabbath." See SABBATH.