"Let God be true though every one were a liar..." - Romans 3:4
"Jesus Christ is the same yesterday and today and forever."
- Hebrews 13:8
God does not lie and is the same every day. That means we can put our faith in His Word and promises 100% of the time, for He will never fail us.
That means when God says: “I will never leave you nor forsake you” (Hebrews 13:5) or when God says: "If any of you lacks wisdom, let him ask God, who gives generously to all without reproach, and it will be given him. But let him ask in faith, with no doubting, for the one who doubts is like a wave of the sea that is driven and tossed by the wind. For that person must not suppose that he will receive anything from the Lord..." (James 1:5-7), He means it and He will never lie!!
Christians can take heart for we have promises that will never be broken! There is more assurance that God's Word will come to pass than the sun will rise the next day.