That lack of faith shows your trust in NOT in the Lord Jesus Christ, but in yourself. :sigh:
He is able....
2 Timothy 1:12 For the which cause I also suffer these things: nevertheless I am not ashamed: for I know whom I have believed, and am persuaded that he is able to keep that which I have committed unto him against that day.
He will perform....
Philippians 1:6 Being confident of this very thing, that he which hath begun a good work in you will perform it until the day of Jesus Christ:
We are more than conquerors THROUGH HIM. Neither principalities nor powers, nor things present, NOR THINGS TO COME......
nothing shall separate us from the love of God WHICH IS IN Christ Jesus.
Romans 8:37-39 Nay, in all these things we are more than conquerors through him that loved us. For I am persuaded, that neither death, nor life, nor angels, nor principalities, nor powers, nor things present, nor things to come, Nor height, nor depth, nor any other creature, shall be able to separate us from the love of God, which is in Christ Jesus our Lord.
To even suggest that God is not able to keep us is a horrible thing....and unscriptural. 1 Cor. 3:15