The Lord is Peace.
Once God decides the salvation for His children, he does not reverse it and no one can reverse it. God 's salvation never failed, never fails,and will never fail. Israel was the witness, disciples of Jesus were the witnesses, now we are the witnesses.
God came down Himself, in human form, and accomplished the salvation for us.
God never reversed what he decided to do concerning the salvation for his children. This promise is based on who God is, It is encouragement for those who serve our Lord Jesus Christ faithfully.
I, even I, am the LORD,
and apart from me there is no savior.
I have revealed and saved and proclaimed—
I, and not some foreign god among you.
You are my witnesses,” declares the LORD, “that I am God.
Yes, and from ancient days I am he.
No one can deliver out of my hand.
When I act, who can reverse it?” (Isaiah 43: 11-13)