Q. 86. What is faith in Jesus Christ?
A. Faith in Jesus Christ is a saving grace, whereby we receive and rest upon him alone for salvation, as he is offered to us in the gospel.
“But we are not among those who shrink back and so are lost, but among those who have faith and so are saved.” (Heb. 10:39)
Faith comes not from intellectual conviction, but from an open, trusting "yes" to God’s invitation to loving unity. Of course, without intellectual conviction, the mind will not instruct the will to say yes. Even so, faith opens one to realms that the mind cannot know. - Nuggets from the Stream of Life from "Caring for the Self, Caring for the Soul," by Philip St. Romain.
Practice is the best evidence of faith. Because Abraham had faith in God, he left his own country. Because Moses had faith in God, he refused to stay in the luxury of Pharaoh's palace, choosing instead to suffer with God's people (Hebrews 11:25-26). Because others had faith in God, they were stoned, sawn in two, executed by the sword, mocked and tortured, thrown in prison, and forced to wander about in animal skins, poverty and torment (Hebrews 11:32-38). — Gerald R. McDermott, Seeing God: Twelve Reliable Signs of True Spirituality (Downers Grove, Ill.: InterVarsity Press, 1995), 221.
A businessman was asked to tell what his personal faith meant to him. He reached back to his boyhood experience. He recalled walking with his father one day, having to reach up to hold on to his hand. After a while he said, "I can't hold on any longer, and you'll have to hold on to me for a while." And he remembered the moment when he felt his father's hand take over. That, he said, was the way it felt to him to have faith in God. And that was precisely an act of grace.
It is important that Christians not let grace become a universal principle or ideology. It is the grace of God of which the Bible speaks. Not the grace of some abstract principle of justice or love or acceptance. As God's grace, and not some principle of grace, God is the one who determines what it will be and where it will go. "God ... called us with a holy calling, not according to our work, but according to his own purpose and grace" (2 Tim. 1:9 NRSV). "But each of us was given grace according to the measure of Christ's gift" (Eph.4:7 NRSV).