Was not Abraham our father justified by works, when he had offered Isaac his son upon the altar? Seest thou how faith wrought with his works, and by works was faith made perfect? 
(James 2:21-22)

Trust in the Lord your God. Believe also in his Son, Jesus. Get rid of sham faith, and really believe. Get rid of professional faith, and trust in the Lord at all times about everything.

“What, trust in him about pounds, shillings, and pence?” Assuredly. I dread the faith that cannot trust God about bread and garments—it is a lying faith.

Depend upon it—that is not the solid, practical faith of Abraham, who trusted God about his tent and his cattle, and about a wife for his son.

The faith that made David trust God about the sons and daughters and the spoil, that is the sort of faith for you and me.

If God cannot be trusted about loaves and fishes, how shall he be trusted about the things of eternity and the glories that are yet to be revealed?

Stay yourself on God with an everyday faith. Faith in God is the exercise of sanctified common sense. The purest reason approves reliance upon God.

The end shall declare the wisdom of believing God. At the last, when we with all believers shall lift up the grand hallelujah unto the Lord God of Israel who reigns over all things for his people, it shall be known by all that faith is honorable and unbelief contemptible. ((Charles SpurgeonAt the Master’s Feet [Grand Rapids: Zondervan, 2005], December 8.))

Charles Spurgeon

Further reading