The hymn Come Thou Fount of Every Blessing is lovely partly because the lyrics speak so honestly about the believer’s heart, particularly those which confess a weak faith and ask God to ensure that faith remains:
Let that grace now like a fetter,
Bind my wandering heart to Thee.
Prone to wander, Lord, I feel it,
prone to leave the God I love;
here’s my heart, O take and seal it,
seal it for thy courts above.
If you are weak as in this regard take a moment to chew on this beautiful selection from a Puritan who well reminded us that faith in Christ is sure because He is sure, regardless of how our faith weakens from time to time:
Thomas Watson, an excerpt from “Faith”, from Body of Divinity.
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Objection. But I fear I have no faith, it is so weak.
Ans. If you have faith, though but in its infancy, be not discouraged. For,
1. A little faith is faith, as a spark of fire is fire.
2. A weak faith may lay hold on a strong Christ; as a weak hand can tie the knot in marriage as well as a strong one. She, in the gospel, who but touched Christ, fetched virtue from him.
3. The promises are not made to strong faith, but to true. The promise does not say, he who has a giant faith, who can believe God’s love through a frown, who can rejoice in affliction, who can work wonders, remove mountains, stop the mouth of lions, shall be saved, but whosoever believes, be his faith ever so small. A reed is but weak, especially when it is bruised; yet a promise is made to it. “A bruised reed will he not break.” (Matt. 12:20)….
The weakest believer is a member of Christ as well as the strongest; and the weakest member of the body mystic shall not perish. Christ will cut off rotten members, but not weak members. Therefore, Christian, be not discouraged. God, who would have us receive them that are weak in faith, will not himself refuse them, Rom. 14:1.