KJV:
But whoso keepeth his word, in him verily is the love of God perfected: hereby know we that we are in him.
NASB:
but whoever keeps His word, in him the love of God has truly been perfected. By this we know that we are in Him:
KJV:
Love not the world, neither the things that are in the world. If any man love the world, the love of the Father is not in him.
NASB:
Do not love the world nor the things in the world. If anyone loves the world, the love of the Father is not in him.
KJV:
Behold, what manner of love the Father hath bestowed upon us, that we should be called the sons of God: therefore the world knoweth us not, because it knew him not.
NASB:
See how great a love the Father has bestowed on us, that we would be called children of God; and such we are. For this reason the world does not know us, because it did not know Him.
KJV:
Hereby perceive we the love of God, because he laid down his life for us: and we ought to lay down our lives for the brethren.
NASB:
We know love by this, that He laid down His life for us; and we ought to lay down our lives for the brethren.
KJV:
But whoso hath this world's good, and seeth his brother have need, and shutteth up his bowels of compassion from him, how dwelleth the love of God in him?
NASB:
But whoever has the world's goods, and sees his brother in need and closes his heart against him, how does the love of God abide in him?
KJV:
Beloved, let us love one another: for love is of God; and every one that loveth is born of God, and knoweth God.
NASB:
Beloved, let us love one another, for love is from God; and everyone who loves is born of God and knows God.
KJV:
He that loveth not knoweth not God; for God is love.
NASB:
The one who does not love does not know God, for God is love.
KJV:
In this was manifested the love of God toward us, because that God sent his only begotten Son into the world, that we might live through him.
NASB:
By this the love of God was manifested in us, that God has sent His only begotten Son into the world so that we might live through Him.