'Function' in the Bible

For this reason, God delivered them to degrading passions as their females exchanged their natural sexual function for one that is unnatural.

In the same way, their males also abandoned their natural sexual function toward females and burned with lust toward one another. Males committed indecent acts with males, and received within themselves the appropriate penalty for their perversion.

For we have many parts in one body, but these parts do not all have the same function.