The word "liveth" is an old-fashioned way of saying "lives." It is often used in ancient texts or older literature to describe the current state of someone's life or existence. Full definition
1:4); «I have been crucified with Christ; yet I live; and yet no longer I, but Christ liveth in me: and the life which I live in the flesh I live in faith, the faith which is in the Son of God, who loved me and gave himself up for me» (Gal. (religion-online.org)
«For I know that my redeemer liveth, and that he shall stand at the latter day upon the earth» (Job 19:25). (religion.blogs.cnn.com)
Paul says something like it in the testimony, «I live; yet not I, but Christ liveth in me.» (religion-online.org)