Never Speak Or Act A Lie

"I wish that I could trace words which would present this matter as it is. God expects His soldiers to be ever on duty. Never are they to yield to temptation, never be unjust. They are neither to yield nor flee. Relying on the strength of God, they are to maintain their integrity. With a firmness that will not yield an inch, they are to hold fast to the word, “It is written.” – {20MR 30.2} 

We are placed on vantage ground because Christ has overcome in our behalf. He has made every provision for us to overcome. Divine power stands behind every will resolutely set to do the right. God has provided the armor and the weapons with which each one is to fight. Let the soldiers of Christ put on the whole armor of God and flinch not at Satan’s attacks. Let them bear in mind that they will not be crowned unless they strive lawfully. The principles contained in the law of God are to be maintained at any cost. Success in the Christian warfare means watchfulness and a daily crucifixion of self. – {20MR 30.3}  

He who is guided by clean, holy principles will be quick to discern the slightest taint of evil, because he keeps Christ before him as his pattern. His deep regret at the discovery of a wrong act means the prompt correction of every step wherein he has diverged from truth. It means a constant, earnest striving for higher and still higher attainments in the Christian life. It means helping others to climb heavenward. It means taking hold of Christ by loving faith and resisting evil if need be unto blood, striving against sin. – {20MR 30.4}  

There are those who have so closely identified themselves with the truth that nothing, not even martyrdom and death, could sever them from it. Those who would evade the truth by silence, fearing to offend someone else, testify to a lie. Playing fast and loose with truth, and dissembling to suit the opinions of someone else, means the shipwreck of faith. Let us despise falsifying. Let us never, by a word or act, or by silence, testify to a lie. If all, under every circumstance, would speak the truth when the truth ought to be spoken, what a different world this would be. – {20MR 30.5}  

I have been placed where I have heard reports borne in which there was scarcely a word of truth. May the Lord pity those who love and make a lie, for unless they change they will at last find themselves outside the city of God. I am bidden to warn all who make untruthful statements that they are serving him who has been a liar from the beginning. Let us be on our guard against untruthfulness, which grows upon him who practices it. I say to all, Make truth your girdle. Be true to your faith. Put away all prevarication and exaggeration. Never make a false statement. For the sake of your own soul and the souls of others, be true in your utterances. Never speak or act a lie. Truth alone will bear to be repeated. A firm adherence to truth is essential to the formation of Christian character. “Stand therefore, having your loins girt about with truth, and having on the breastplate of righteousness.” – {20MR 30.6}

Ellen G. White, Manuscript Releases, vol. 20.