Hello Stephen, The underlying transliterated Greek phrase of ‘mia twn sabbatwn’ behind ACTS 20:7, 1 COR 16:2, MTH 28:1, MRK 16:2, LUK 24:1, JHN 20:1, 19 has been translated variously as; ‘one of the sabbaths’, ‘first of the sabbaths’, ‘the first day of the week’, 'the First day Shabath of unleaven B...