This may seem like a silly question. but I was wondering how you might feel about it. I think the more a person tries to be faithful to God, the more his confidence grows in His grace. Is there any specific Scripture that you know of that would support such a thought?
There are several passages that connect the idea of striving to be obedient to being confident in God's promises.
"Blessed is the man who trusts in the LORD and whose trust is the LORD. For he will be like a tree planted by the water, that extends its roots by a stream and will not fear when the heat comes; but its leaves will be green, and it will not be anxious in a year of drought nor cease to yield fruit" (Jeremiah 17:7-8).
"The LORD is my light and my salvation; whom shall I fear? The LORD is the defense of my life; whom shall I dread? When evildoers came upon me to devour my flesh, my adversaries and my enemies, they stumbled and fell. Though a host encamp against me, my heart will not fear; though war arise against me, in spite of this I shall be confident. One thing I have asked from the LORD, that I shall seek: that I may dwell in the house of the LORD all the days of my life, to behold the beauty of the LORD and to meditate in His temple. For in the day of trouble He will conceal me in His tabernacle; in the secret place of His tent He will hide me; He will lift me up on a rock. and now my head will be lifted up above my enemies around me, and I will offer in His tent sacrifices with shouts of joy; I will sing, yes, I will sing praises to the LORD. Hear, O LORD, when I cry with my voice, and be gracious to me and answer me. When You said, "Seek My face," my heart said to You, "Your face, O LORD, I shall seek" " (Psalms 27:1-8).
"Then justice will dwell in the wilderness and righteousness will abide in the fertile field. And the work of righteousness will be peace, and the service of righteousness, quietness and confidence forever" (Isaiah 32:16-17).
"Therefore, do not throw away your confidence, which has a great reward. For you have need of endurance, so that when you have done the will of God, you may receive what was promised. For yet in a very little while, He who is coming will come, and will not delay. But My righteous one shall live by faith; and if he shrinks back, My soul has not pleasure in him. But we are not of those who shrink back to destruction, but of those who have faith to the preserving of the soul" (Hebrews 10:35-39).