'Years' in the Bible

then, after three years I went up to Jerusalem to enquire about Peter, and remained with him fifteen days,

Then, after fourteen years again I went up to Jerusalem with Barnabas, having taken with me also Titus;

and this I say, A covenant confirmed before by God to Christ, the law, that came four hundred and thirty years after, doth not set aside, to make void the promise,

days ye observe, and months, and times, and years!