New Revised Standard Version
but whoever obeys his word, truly in this person the love of God has reached perfection. By this we may be sure that we are in him:

Contemporary English Version
We truly love God only when we obey him as we should, and then we know we belong to him.

New American Bible
But whoever keeps his word, the love of God is truly perfected in him. This is the way we may know that we are in union with him:

Douay-Rheims Bible
But he that keepeth his word, in him in very deed the charity of God is perfected. And by this we know that we are in him.

But he that keepeth his word, in him in very deed the charity of God is perfected. And by this we know that we are in him.

whoso.

1 John 2:3,4 And by this we know that we have known him, if we keep his commandments. . . .

Psalm 105:45 That they might observe his justifications, and seek after his law.

Psalm 106:3 Blessed are they that keep judgment, and do justice at all times.

Psalm 119:2,4,146 Blessed are they that search his testimonies: that seek him with their whole heart. . . .

Proverbs 8:32 Hear instruction, and be wise, and refuse it not.

Proverbs 28:7 He that keepeth the law, is a wise son: but he that feedeth gluttons, shameth his father.

Ecclesiastes 8:5 He that keepeth the commandment, shall find no evil. The heart of a wiser man understandeth time and answer.

Ezekiel 36:27 And I will put my spirit in the midst of you: and I will cause you to walk in my commandments, and to keep my judgments, and do them.

Luke 11:28 But he said: Yea rather, blessed are they who hear the word of God and keep it.

John 14:21,23 He that hath my commandments and keepeth them; he it is that loveth me. And he that loveth me shall be loved of my Father: and I will love him and will manifest myself to him. . . .

Revelation 12:17 And the dragon was angry against the woman: and went to make war with the rest of her seed, who keep the commandments of God and have the testimony of Jesus Christ. [18] And he stood upon the sand of the sea.

Revelation 14:12 Here is the patience of the saints, who keep the commandments of God and the faith of Jesus.

in him.

1 John 4:12,18 No man hath seen God at any time. If we love one another, God abideth in us: and his charity is perfected in us. . . .

James 2:22 Seest thou that faith did cooperate with his works and by works faith was made perfect?

hereby.

1 John 2:27,28 And as for you, let the unction, which you have received from him abide in you. And you have no need that any man teach you: but as his unction teacheth you of all things and is truth and is no lie. And as it hath taught you, abide in him. . . .

1 John 3:24 And he that keepeth his commandments abideth in him, and he in him. And in this we know that he abideth in us by the Spirit which he hath given us.

1 John 4:13,15,16 In this we know that we abide in him, and he in us: because he hath given us of his spirit. . . .

1 John 5:20 And we know that the Son of God is come. And he hath given us understanding that we may know the true God and may be in his true Son. This is the true God and life eternal.

John 6:56 He that eateth my flesh and drinketh my blood abideth in me: and I in him.

John 15:5 I am the vine: you the branches. He that abideth in me, and I in him, the same beareth much fruit: for without me you can do nothing.

Romans 8:1 There is now therefore no condemnation to them that are in Christ Jesus, who walk not according to the flesh.

1 Corinthians 1:30 But of him are you in Christ Jesus, who of God is made unto us wisdom and justice and sanctification and redemption:

2 Corinthians 5:17,21 If then any be in Christ a new creature, the old things are passed away. Behold all things are made new. . . .

Colossians 2:9,10 For in him dwelleth all the fulness of the Godhead corporeally. . . .