Sometimes Sometime
From BiblePortal Wikipedia
Morrish Bible Dictionary [1]
At one time, once. Ephesians 2:13; Ephesians 5:8; Colossians 1:21; Colossians 3:7; Titus 3:3; 1 Peter 3:20 .
Hastings' Dictionary of the Bible [2]
SOMETIME, SOMETIMES . There is no difference in the use of these two forms in AV [Note: Authorized Version.] , and except in Sir 37:14 (‘For a man’s mind is sometime wont to tell him,’ etc.), where the meaning is ‘occasionally,’ as now, both forms are used in the sense of ‘once upon a time.’