By this we can be sure that we have come to know Him: if we keep His commandments.

John 14:15
If you love Me, you will keep My commandments.

John 15:10
If you keep My commandments, you will remain in My love, just as I have kept My Father's commandments and remain in His love.

1 John 2:4
If anyone says, "I know Him," but does not keep His commandments, he is a liar, and the truth is not in him.

1 John 2:5
But if anyone keeps His word, the love of God has been truly perfected in him. By this we know that we are in Him:

1 John 2:13
I am writing to you, fathers, because you know Him who is from the beginning. I am writing to you, young men, because you have overcome the evil one. I have written to you, children, because you know the Father.

1 John 3:6
No one who remains in Him keeps on sinning. No one who continues to sin has seen Him or known Him.

1 John 3:22
and we will receive from Him whatever we ask, because we keep His commandments and do what is pleasing in His sight.

1 John 3:24
Whoever keeps His commandments remains in God, and God in him. And by this we know that He remains in us: by the Spirit He has given us.

1 John 4:7
Beloved, let us love one another, because love comes from God. Everyone who loves has been born of God and knows God.

1 John 4:13
By this we know that we remain in Him, and He in us: He has given us of His Spirit.

1 John 5:2
By this we know that we love the children of God: when we love God and keep His commandments.

1 John 5:3
For this is the love of God, that we keep His commandments. And His commandments are not burdensome,

Revelation 12:17
And the dragon was enraged at the woman, and went to make war with the rest of her children, who keep the commandments of God and hold to the testimony of Jesus. And the dragon stood on the shore of the sea.

Revelation 14:12
Here is a call for the perseverance of the saints who keep the commandments of God and the faith of Jesus.

And hereby we do know that we know him, if we keep his commandments.