will transform our lowly bodies to be like His glorious body: When Jesus returns, he will transform believers' physical bodies. Instead of weak, aging bodies that die, they will have perfect, eternal bodies (see 1 Corinthians 15:42–54; compare Romans 8:23).
enables Him to subject all things to Himself: This means that Jesus will have complete authority over all things. Everything in creation will be subject to his rule (see 1 Corinthians 15:24–27).