The Greek word “deuteros”

Used several times in the New Testament, “deuteros” meant “second.”  Jesus used this word (Jn. 3:4), as did others such as Paul (1 Cor. 12:28; Tit. 3:10), Peter (2 Pet. 3:1), and John (Rev. 2:11; 6:3).

In some places deuteros “can be used to emphasize the specifically new, which surpasses and excels the ‘first’” (Exegetical Dictionary of the New Testament, 1:292).