輪廻転生 is a Japanese Zen quote or proverb that expresses the idea of all things being in flux through the endless circle of birth, death, and rebirth or the circle of transmigration.

永生 are the last two words from John 3:16 in the Chinese Union Bible.

Although not specifically Christian, this is the way to express ever-lasting life or eternal life in Chinese.

In Japanese, this can either mean eternal life or immortality.

See Also:  From Here to Eternity | Samsara / Endless Cycle of Rebirth | the Key to Immortality is First Living a Life Worth Remembering

來世 is a word that can be used in many different ways.

It is often used to express the next life (life in heaven or wherever your soul is bound for). So it does have a religious overtone. However, it can also be used to express your life in the future - perhaps during your present lifetime.

It can also be translated as “the next world,” “the next generation,” “the time that is to come,” “otherworld,” or simply “posterity.”

See Also:  From Here to Eternity | Samsara / Endless Cycle of Rebirth | the Key to Immortality is First Living a Life Worth Remembering

重生 is the Chinese word for rebirth. This can be used literally or metaphorically. As a metaphor, you could use this to say something like, “We are watching the rebirth of New Orleans after the disaster of Katrina.”

重生 is sometimes translated as “renaissance.”

Note: 重生 is not the Buddhist concept of reincarnation or re-birth.