Isaiah 25 & 1 John 3

Isaiah 25

    O LORD, you are my God;
        I will exalt you; I will praise your name,
    for you have done wonderful things,
        plans formed of old, faithful and sure.
    For you have made the city a heap,
        the fortified city a ruin;
    the foreigners' palace is a city no more;
        it will never be rebuilt.
    Therefore strong peoples will glorify you;
        cities of ruthless nations will fear you.
    For you have been a stronghold to the poor,
        a stronghold to the needy in his distress,
        a shelter from the storm and a shade from the heat;
    for the breath of the ruthless is like a storm against a wall,
        like heat in a dry place.
    You subdue the noise of the foreigners;
        as heat by the shade of a cloud,
        so the song of the ruthless is put down.
    
    
    On this mountain the LORD of hosts will make for all peoples
        a feast of rich food, a feast of well-aged wine,
        of rich food full of marrow, of aged wine well refined.
    And he will swallow up on this mountain
        the covering that is cast over all peoples,
        the veil that is spread over all nations.
        He will swallow up death forever;
    and the Lord GOD will wipe away tears from all faces,
        and the reproach of his people he will take away from all the earth,
        for the LORD has spoken.
    It will be said on that day,
        “Behold, this is our God; we have waited for him, that he might save us.
        This is the LORD; we have waited for him;
        let us be glad and rejoice in his salvation.”
    For the hand of the LORD will rest on this mountain,
        and Moab shall be trampled down in his place,
        as straw is trampled down in a dunghill.
    And he will spread out his hands in the midst of it
        as a swimmer spreads his hands out to swim,
        but the LORD will lay low his pompous pride together with the skill of his hands.
    And the high fortifications of his walls he will bring down,
        lay low, and cast to the ground, to the dust.
  

(Isaiah 25 ESV)

1 John 3

    See what kind of love the Father has given to us, that we should be called children of God; and so we are. The reason why the world does not know us is that it did not know him. Beloved, we are God's children now, and what we will be has not yet appeared; but we know that when he appears we shall be like him, because we shall see him as he is. And everyone who thus hopes in him purifies himself as he is pure.

    Everyone who makes a practice of sinning also practices lawlessness; sin is lawlessness. You know that he appeared in order to take away sins, and in him there is no sin. No one who abides in him keeps on sinning; no one who keeps on sinning has either seen him or known him. Little children, let no one deceive you. Whoever practices righteousness is righteous, as he is righteous. Whoever makes a practice of sinning is of the devil, for the devil has been sinning from the beginning. The reason the Son of God appeared was to destroy the works of the devil. No one born of God makes a practice of sinning, for God's seed abides in him, and he cannot keep on sinning because he has been born of God. By this it is evident who are the children of God, and who are the children of the devil: whoever does not practice righteousness is not of God, nor is the one who does not love his brother.

    For this is the message that you have heard from the beginning, that we should love one another. We should not be like Cain, who was of the evil one and murdered his brother. And why did he murder him? Because his own deeds were evil and his brother's righteous. Do not be surprised, brothers, that the world hates you. We know that we have passed out of death into life, because we love the brothers. Whoever does not love abides in death. Everyone who hates his brother is a murderer, and you know that no murderer has eternal life abiding in him.

    By this we know love, that he laid down his life for us, and we ought to lay down our lives for the brothers. But if anyone has the world's goods and sees his brother in need, yet closes his heart against him, how does God's love abide in him? Little children, let us not love in word or talk but in deed and in truth.

    By this we shall know that we are of the truth and reassure our heart before him; for whenever our heart condemns us, God is greater than our heart, and he knows everything. Beloved, if our heart does not condemn us, we have confidence before God; and whatever we ask we receive from him, because we keep his commandments and do what pleases him. And this is his commandment, that we believe in the name of his Son Jesus Christ and love one another, just as he has commanded us. Whoever keeps his commandments abides in God, and God in him. And by this we know that he abides in us, by the Spirit whom he has given us.

(1 John 3 ESV)

1 John 3: Those whom Christ has redeemed are now considered children of God. Because we are God's children, we can expect to one day be made like His Son. Therefore, those who are truly God's adopted children will make every effort to live more like Christ during this current life with the hope that we will be like Him in the life to come.

True children of God act like Christ, and those who fail to live like Christ must not be His children. If God's Spirit dwells within all of God's children then all of God's children will take on the family resemblance and be people who practice the righteousness of His Son.