Peter’s fall was not instantaneous, but gradual. Self-confidence led him to the belief that he was saved, and step after step was taken in the downward path, until he could deny his Master. Never can we safely put confidence in self or feel, this side of heaven, that we are secure against temptation. Those who accept the Saviour, however sincere their conversion, should never be taught to say or to feel that they are saved. This is misleading. Every one should be taught to cherish hope and faith; but even when we give ourselves to Christ and know that He accepts us, we are not beyond the reach of temptation. God’s word declares, “Many shall be purified, and made white, and tried.” Daniel 12:10. Only he who endures the trial will receive the crown of life. (James 1:12). {COL 155.1}
That statement is in compete opposition to Jesus words to us.
This is how we KNOW we belong to the truth........believe in the name of his Son, Jesus Christ, and to love one another as he commanded us. 24 The one who keeps God’s commands lives in him, and he in them. 1Jn3
24 Verily, verily, I say unto you, He that heareth my word, and believeth on him that sent me, hath everlasting life, and shall not come into condemnation; but is passed from death unto life. Jn5:24
16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life. Jn3:16
We will be tempted and we will sin. That does not mean every time we sin we lose our eternal life. No one will be in Heaven if we believe Ellen White's writings.
The practice of secret habits surely destroys the vital forces of the system. All unnecessary vital action will be followed by corresponding depression. Among the young, the vital capital, the brain, is so severely taxed at an early age, that there is a deficiency, and great exhaustion, which leaves the system exposed to disease of various kinds. But the most common of these is consumption. None can live when their vital energies are used up. They must die. God hates everything impure, and his frown is upon all who give themselves up to gradual and sure decay.
ApM 28.1
“Know ye not that ye are the temple of God, and that the Spirit of God dwelleth in you? If any man defile the temple of God, him shall God destroy; for the temple of God is holy, which temple ye are.”
ApM 29.1
Those who corrupt their own bodies cannot enjoy the favor of God, until they sincerely repent, make an entire reform, and perfect holiness in the fear of the Lord. None can be Christians and indulge in habits which debilitate the system, and bring on a state of prostration of the vital forces, which end in making a complete wreck of beings formed in the image of God. This moral pollution will certainly bring its reward. The cause must bring the results. Those who profess to be disciples of Christ should be elevated in all their thoughts and acts, and should ever realize that they are fitting for immortality, and that if saved, they must be without spot, or wrinkle, or any such thing. Their Christian character must be without a blemish, or they will be pronounced unfit to be taken to a holy heaven, to dwell with pure, sinless beings in God's everlasting kingdom.
ApM 29.2
We have not forgotten you, my dear boy. When we see other little children around, we long to get our little Willie in our arms again, and press his little soft cheek, and receive his kiss. In about five weeks we shall be at home again, and then, Willie, we will work in the garden, and tend the flowers and plant the seeds. You must be a good, sweet, little boy, and love to obey Jenny and Lucinda. Give up your will, and when you wish to do anything very much, inquire, Is it not selfish? You must learn to yield your will and your way. It will be a hard lesson for my little boy to learn, but it will in the end be worth more to him than gold. [By the blessing of God and his mother's instructions, Willie has overcome the impatient spirit which he sometimes manifested when quite young, and he now possesses a most affectionate, amiable, and obedient disposition. A.P.P.] Learn, my dear Willie, to be patient, to wait others’ time and convenience; then you will not get impatient and irritable. The Lord loves those little children who try to do right, and he has promised that they shall be in his kingdom. But wicked children God does not love. He will not take them to the beautiful City, for he only admits the good, obedient, and patient children there. One fretful, disobedient child, would spoil all the harmony of heaven. When you feel tempted to speak impatient and fretful, remember the Lord sees you, and will not love you if you do wrong. When you do right and overcome wrong feelings, the Lord smiles upon you.
AY 61.2