Christianity is the truth because …

“Christianity is the truth because Jesus Christ is the risen, sinless Savior – the embodiment, the very Truth Himself. He is the Way, the Truth, and the Life, and all other ways to salvation are wrong. All ideas, values, beliefs, and worldviews that contradict the nature and character of God are wrong and are a lie. They come from Satan, the father of lies”
– from p.219 of “One Nation Under Man?” by Brannon Howse.

God has clearly said …

“God has clearly said, “Be holy, because I am holy.”
Surely He has not commanded us to be holy without providing the means to be holy. The privilege of being holy is yours, and the decision and responsibility to be holy is yours. If you make that decision, you will experience the fullness of joy which Christ has promised to those who walk in obedience to Him.”
– from p.158 of “The Pursuit of Holiness” by Jerry Bridges.

True joy comes only from God …

“True joy comes only from God and He shares this joy with those who walk in fellowship with Him. …
A life of disobedience cannot be a life of joy.”
– from p.155 of “The Pursuit of Holiness” by Jerry Bridges.

Another defilement of spirit …

“Another defilement of spirit that has shipwrecked many Christians is bitterness. Bitterness arises in our hearts when we do not trust in the sovereign rule of God in our lives. …
We can become bitter against God or against other people. …
Bitterness toward people is the result of an unforgiving spirit. Someone has wronged us, apparently or actually, and we refuse to forgive that person. Instead we harbor thoughts of bitterness toward the person. We refuse to forgive because we will not recognize that God has forgiven us of far, far greater wrongs. We are like the servant who, having just been forgiven a debt of several million dollars, had a fellow servant thrown into prison over a debt of a few dollars (Matthew 18:21-35).”

– from p.123,124 of “The Pursuit of Holiness” by Jerry Bridges.

Do you think that you must be lost …

“Do you think that you must be lost because you are a sinner? This is the reason why you can be saved. Because you own yourself to be a sinner I would encourage you to believe that grace is ordained for such as you are. One of our hymn-writers even dared to say:
A sinner is a sacred thing;
The Holy Ghost hath made him so.
It is truly so, that Jesus seeks and saves that which is lost. He died and made a real atonement for real sinners. When men are not playing with words, or calling themselves “miserable sinners,” out of mere compliment, I feel overjoyed to meet with them. I would be glad to talk all night to bona fide sinners. The inn of mercy never closes its doors upon such, neither weekdays nor Sunday. Our Lord Jesus did not die for imaginary sins, but His heart’s blood was spilt to wash out deep crimson stains, which nothing else can remove.”
-from book “All of Grace” by Charles Spurgeon.

The struggle we have …

“The struggle we have with a holy God is rooted in the conflict between God’s righteousness and our unrighteousness. He is just, and we are unjust. This tension creates fear, hostility, and anger within us toward God. The unjust person does not desire the company of a just judge. We become fugitives, fleeing from the presence of the One whose glory can blind us and whose justice can condemn us. We are at war with Him unless or until we are justified. Only the justified person can be comfortable in the presence of a holy God.”
– from p.180 of “The Holiness of God” by R. C. Sproul.