"sola gratia" grace alone. Unmerited favor, remember? We do not deserve what God has given and offered to us. Since it is not earned, and is grace, then how -or rather why- would God decide to not extend His grace continuously?

I believe and am encouraged by the verses that do say it is by grace alone that I am saved. Certainly, if it were up to me to physically keep any law or do good works, what then, would I no longer be saved because I am now disabled and cannot do works? AH... I am comforted because it is God who is gracious. I only had to accept His Gift, for it is by grace through faith I am saved.