Your promise cannot be repealed. They stand forever.

"The grass withers, the flower wilts, but the word of our God stands forever.”  (Isaiah 40: 8)

Your word O Lord stands forever.
Your promise stands forever and cannot be repealed.
Your plan stands forever come what may.
Your gifts and your call are irrevocable. (Romans 11: 29)

Knowing all the above, my heart says to me, "trust in Him forever."