The Touchstone

Observe: “Ye shall know the truth”-not a truth; but the truth; the saving, purifying, glorifying truth. Keep on believing, and Jesus will teach you that great truth which is above all other truth-essential, quickening, cleansing, divine. You shall know the truth. You may be charged dogmatism, but you will not flinch from the assurance that you know the truth. You no longer guess at truth, nor hit on a sliding scale of probabilities; but you know it assuredly. You will grow familiar with it; truth will be to you a well-known friend. You will discriminate so as to know the truth when you see it, and detect it at once from the deceptive falsehood. You will know the truth, and you will not be led away by the flattering voice of error. You will have the touchstone with you, and will not be deceived by base metals. You will so know the truth as to be influenced by it, actuated by it, filled by it, strengthened by it, comforted by it, and by its power you will yourself be made true. Surely this is a good reason for abiding Christ’s Words! ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2191.cfm

Truth Mixed with Error is Error

Error is like leaven of which we read, “A little leaven leaveneth the whole lump” (Galatians 5:9). Truth mixed with error is equivalent to all error, except that it is more innocent looking and, therefore, more dangerous. God hates such a mixture! Any error, or any truth-and-error mixture, calls for definite exposure and repudiation. To condone such is to be unfaithful to God and His Word and treacherous to imperiled souls for whom Christ died. (source)

The Unlawful Making of Days Holy

John Calvin’s commentary:

Of what nature, then, was the observation which Paul reproves? It was that which would bind the conscience, by religious considerations, as if it were necessary to the worship of God, and which, as he expresses it in the Epistle to the Romans, would make a distinction between one day and another. (Romans 14:5.)

Read more: Holidays Making Void the Grace of Christ