come and go

verb3

1. •
   To alternately enter and exit, arrive and depart (either physically or figuratively).

   • He comes and goes as he pleases.
2. •
   To repeatedly appear and disappear; to be transient.

   • My headaches come and go, but the pain in my neck is constant.
3. •
   to elapse, pass by; to occur

   • THIRTY years have come and gone, / Melting away like Southern Snows, / Since, in the light of a summer's night, / I went to the garden to seek my Rose. — 1875