Updated: Apr 10, 2018
We having the same spirit of faith, according as it is written, I believed, and therefore have I spoken; we also believe, and therefore speak... (2 Corinthians 4:13)
In Mark 11:23 Jesus said,
"For verily I say unto you, That whosoever shall say unto this mountain, Be thou removed, and be thou cast into the sea; and shall not doubt in his heart, but shall believe that those things which he saith shall come to pass; he shall have whatsoever he saith."
Some Bible commentaries and translations make it sound as though Jesus' emphasis here was on the mountain. But the original text indicates that the Master's emphasis was on the "saying part of faith"- which is a law of the Spirit.
This law indicates that you'll have what you say- either positive or negative, for death and life are in the power of the tongue (Proverbs 18:21); this is a spiritual law. Spiritual laws are very much like physical laws. They'll work for you if you apply them rightly or against you if they're abused. As Christians, we reign and win in life by operating spiritual laws. This is why you must, in faith, speak words that are consistent with the realities of the new creation.
On hearing God's Word, faith comes to you. When you believe and endorse it as truth, refusing to consider the current circumstances, you activate the law of faith! This was how Abraham demonstrated strong faith:
And being not weak in faith, he considered not his own body now dead, when he was about an hundred years old, neither yet the deadness of Sarah's womb: but was strong in faith, giving glory to God.
Abraham fixed his attention on the realities of God's Word, and went further to declare what God had said concerning him and Sarah. He activated his faith by declaring his believing; calling himself what God had called him: "father of many." So you see, until you say it, you can't have it. When you ask the Lord for anything, simply believe that you've received and speak accordingly. Don't wait to see it first, for faith is of the spirit. It's the response of the human spirit to the Word of God. It calls real that which the physical senses cannot perceive.
I look away from all distracting influences and focus my attention on God's eternal and infallible Word. Irrespective of what I see, hear or feel, I'm convinced that I'm a victor and a success in Christ Jesus! I'm what God says I am; I have what He says I have, and I can do what He says I can do. Hallelujah.
Further Study: Hebrews 13:5, Mark:11:22-23