WE ARE SAFE AND SECURE
Because of what Christ did for us, we are safe in His hand and nothing or noone can pluck us out. The evil one cannot touch us (1John 5:18b). God will never leave us or forsake us - so there's never anything we or anyone else could do to ever make Him leave. Sin is the only thing that brings alienation, and since He's taken all our sin away already, we'll never be alienated from Him again, no matter what, ever!
We're stuck together by "grace glue"! He promised He'd never turn away from us or stop doing good to us, and He's given us a new heart that won't turn away from Him (Jer. 32:40). He'll neither leave us nor let us go. We can fail and still be "in" - that's security in His love. He put us "in" and keeps us in by His grace, not be any work of ours; and since it's up to Him and His work, it's done and sure.
We're not vulnerable. We don't have to think that "anything" can happen to us; we're safe in His hand. He won't harm us. He won't send evil things on us, for He only gives good gifts. His Life in us will buoy us up in every situation. He will never leave us alone no matter how we react to hard times. He will carry us safely in His arms no matter what. He always leads us in triumph (2 Co. 2:14).
God has a hold on us and He's not letting go. His Spirit sealed us for the day of redemption - we're secure in Him. He will finish what He's started in us. He will bring us physically to the heavenly kingdom (I say physically because our spirits are already there, relaxing on His lap on the throne, "seated with Him in heavenly places" - Eph. 2:6). With Jesus, we cannot lose. And we can't mess this up, it's a done deal. As R.F. Capon says, "You can't get away from a love that will not let you go!"