If God says anything, it can be believed as if you have already seen it happen. God is truth, and cannot lie. It goes against his very nature and being. John MacArthur said,
"If all mankind were to agree that God had been unfaithful to His promises, it would only prove that all are liars and God is true."
He will never betray his promises. Throughout Scripture, every promise He made, He kept, whether positive or negative. When He promised Abraham many nations (Genesis 17), God truly gave him many nations, including Israel. When He promised Moses deliverance (Exodus 5:22-6:12), God truly delivered them. He promised Adam that he would die if he ate of the tree (Genesis 2:17), and sure enough, Adam eventually died.
1 Corinthians 1:9 (ESV) says,
Every promise God makes is just as infallible as Scripture itself. If His promise cannot be trusted, neither can his word. But His word can be trusted, as can His promises. He is infallible; His promises are inerrant; there is no way He would lie or break His promise. Even when it seems as if the promise will prove untrue, He will be true to his word. Thomas Watson said,
"God is to be trusted when His providences seem to run contrary to His promises. God promised David to give him the crown, to make him king; but providence turns contrary to His promise; David was pursued by Saul, was in danger of his life; but all this while it was David's duty to trust God. The Lord does oftentimes, by cross providence, bring to pass His promise. God promised Paul the lives of all that were with him in the ship, but now the providence of God seems to run quite contrary to His promise; the winds blow, the ship splits and breaks in pieces; and thus God fulfilled His promise; upon the broken pieces of the ship, they all come safe to shore. Trust God when providences seem to run quite contrary to promises"
"God is faithful, by whom you were called into the fellowship of his Son, Jesus Christ our Lord."
Many people have misconceptions of what God promises. Others have a completely blurred view of the truth, either because of wishful thinking or because they have been decieved by the likes of Creflo Dollar, Fred Price, Paul Crouch, or Todd Bentley. Many see God as promising salvation to those who earn it. Many see God as promising good people Heaven. Many see God as promising health and wealth if someone gets saved. These are simply untrue, and lead to the idea that God is unfaithful when such a thing doesn't happen. Instead, we need to examine what God truly promised. He has promised Salvation to those who Repent and Trust in him. He has promised a new nature to those he saved. Likewise, to those who continue in their sins, He promised wrath and judgement. Study in scriptures to find what God has promised, and trust in Him to fulfill them. He is honest and trustworthy with His Word.
"What Is a Covenant?" By Matt Slick
"How do I know which of God's Promises are for Me?" By S. Michael Houdmann
"What are the Promises of God?" By S. Michael Houdmann
About the Author
Brandon C. Hines is a young writer from somewhere in northern Alabama who writes about Theology, Polemics, and Apologetics. His beliefs are best summarized by the 1689 London Baptist Confession.
You can search for various topics I have written about by going to Google and typing in a keyword, then typing site:Learningthepath.weebly.com after it.