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The keys of everlasting life are the love of God, the hope of glory and the faith in Jesus Christ.
I am he that liveth, and was dead; and, behold, I am alive for evermore, Amen; and have the keys of hell and of death. Revelation 1:18
And I will give unto thee the keys of the kingdom of heaven: and whatsoever thou shalt bind on earth shall be bound in heaven: and whatsoever thou shalt loose on earth shall be loosed in heaven. Matthew 16:19
And now abideth faith, hope, charity, these three; but the greatest of these is charity. 1 Corinthians 13:13

The love of God will keep you on the pathway of life.
Romans 8:38  For I am persuaded, that neither death, nor life, nor angels, nor principalities, nor powers, nor things present, nor things to come,
39  Nor height, nor depth, nor any other creature, shall be able to separate us from the love of God, which is in Christ Jesus our Lord.

The hope of glory gives you a reason to keep going.
1 John 3:2  Beloved, now are we the sons of God, and it doth not yet appear what we shall be: but we know that, when he shall appear, we shall be like him; for we shall see him as he is.
3  And every man that hath this hope in him purifieth himself, even as he is pure.
Or saith he it altogether for our sakes? For our sakes, no doubt, this is written: that he that ploweth should plow in hope; and that he that thresheth in hope should be partaker of his hope. 1 Corinthians 9:10

The faith in Jesus Christ is what makes it all possible.
And Jesus said unto them, Because of your unbelief: for verily I say unto you, If ye have faith as a grain of mustard seed, ye shall say unto this mountain, Remove hence to yonder place; and it shall remove; and nothing shall be impossible unto you. Matthew 17:20
Jesus said unto him, If thou canst believe, all things are possible to him that believeth. Mark 9:23

If a person does not love God, He will not have any desire to be with Him.
1 Corinthians 13:1  ¶Though I speak with the tongues of men and of angels, and have not charity, I am become as sounding brass, or a tinkling cymbal.
2  And though I have the gift of prophecy, and understand all mysteries, and all knowledge; and though I have all faith, so that I could remove mountains, and have not charity, I am nothing.
3  And though I bestow all my goods to feed the poor, and though I give my body to be burned, and have not charity, it profiteth me nothing.
¶Charity never faileth: but whether there be prophecies, they shall fail; whether there be tongues, they shall cease; whether there be knowledge, it shall vanish away. 1 Corinthians 13:8

If a person loses his hope of glory, he doesn't have any motivation to stay on the pathway of life.
The eyes of your understanding being enlightened; that ye may know what is the hope of his calling, and what the riches of the glory of his inheritance in the saints, Ephesians 1:18
1 Corinthians 13:4  ¶Charity suffereth long, and is kind; charity envieth not; charity vaunteth not itself, is not puffed up,
5  Doth not behave itself unseemly, seeketh not her own, is not easily provoked, thinketh no evil;
6  Rejoiceth not in iniquity, but rejoiceth in the truth;
7  Beareth all things, believeth all things, hopeth all things, endureth all things.

If a person doesn't have faith in Jesus Christ it is not possible to walk the pathway of everlasting life.
But without faith it is impossible to please him: for he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him. Hebrews 11:6

Seek then to abound in love, hope and faith, all three.
Remembering without ceasing your work of faith, and labour of love, and patience of hope in our Lord Jesus Christ, in the sight of God and our Father; 1 Thessalonians 1:3

For they have the power from the prisons of this world to set you free.
If ye keep my commandments, ye shall abide in my love; even as I have kept my Father's commandments, and abide in his love. John 15:10