“…And not being weak in faith, he did not consider his own body, already dead (since he was about a hundred years old), and the deadness of Sarah’s womb. He did not waver at the promise of God through unbelief, but was strengthened in faith, giving glory to God, and being fully convinced that what He had promised He was also able to perform.” Romans 4:19-21
God’s plan for His children here on earth is that our walk with Him be a walk of faith. A faith that is focused on what is not perceived with our physical senses. We know God cannot lie and whatever He says in His Word, if it is not already evident to our physical senses, it will eventually come to pass.
If you want to grow strong spiritually, learn to put what God says in His Word ahead of what your circumstances and physical senses tell you. As we keep our focus on God and His Word, we can be fully convinced, like Abraham, that God is able to fulfill ALL He has promised.