1) You can know you are in His grip if you listen & respond to what Jesus says in the Gospels (Jn 10:22-27)
2) You can know you are in His grip because Jesus & the Father work together to protect you (Jn 10:28-30)
3) You can know you are in His grip if you agree with Jesus that it is not blasphemy to call Jesus both God & man (Jn 10:31-42)