1 Corinthians 12:24

whereas our comely parts have no need: but God tempered the body together, giving more abundant honor to that part which lacked;

'comely parts have no need' -'while the more decorous parts (e.g., the face) do not have such need...Bodily appearances are deceiving; all the parts are necessary. which is reflected in this case by the very way we treat some parts of our bodies that seem "lesser" to us.' (Fee p. 614)

'but God tempered the body together' -

'tempered' -'Lit., mixed together' (Vincent p. 259) 'All this bespeaks the providence with which God has arranged the various parts of the body and adjusted their functions and relations so that they are all interdependent.' (F.F. Bruce p. 122)

'giving more abundant honor to that part which lacked' -'by giving importance of function to the parts which lack apparent importance.' (Phi)

Point to Note:

Evolutionary theory in the past has argued that certain organs in the human body are "leftovers" from previous stages in human evolution, and hence serve no useful purpose for us today. Paul's argument or analogy, to be true, must assert that very part or organ in the human body has. use or function. Your not born with any useless parts!