1 John 2:24
Therefore, let what you have heard from the beginning abide in you. If what you have heard from the beginning, abide in you; you also shall abide in the Son, and in the Father:
1 John 1:3
that which we have seen and heard, we declare to you; that you also may have fellowship with us: and our fellowship truly is with the Father, and with his Son, Jesus Christ.
1 John 2:7
Brethren, I do not write a new commandment to you; but an old commandment, which you had from the beginning. The old commandment is the word, which you have heard from the beginning.
1 John 1:7
But if we walk in the light, as he is in the light; we have fellowship with one another, and the blood of Jesus Christ the Son cleanses us from all sin.
1 John 4:13
By this, we know that we abide in him, and he in us, because he has given us of his Spirit.
1 John 4:16
And we have known, and believed the love which God has in us. God is love; wherefore, he who abides in love, abides in God, and God in him.
2 John 1:2
for the truth's sake, which is in us, and shall be with us forever:
2 John 1:5-6
And now I beseech you, Cyria, not as writing to you a new commandment, but that which we had from the beginning, that we love one another.
3 John 1:3
For I rejoiced greatly, when the brethren came, and bore witness to your truth, even as you walk in truth.
Revelation 3:3
Remember, therefore, how you have received and heard, and hold fast, and reform: therefore, unless you are watchful, I will come upon you as thief, and you shall not know what hour I will come upon you.
Revelation 3:11
I come quickly: keep that which you have, that no man take your crown.