约翰一书 4:21
And this commandment have we from him, That he who loveth God love his brother also.
Context
This verse from 约翰一书 Chapter 4 connects to 10 cross-references. 不要信一切的灵，要试验那些灵是否出于神，因为有许多假先知已出来行在世间。凡灵认耶稣基督是成了肉身来的，就是出于神的。神就是爱，不认识神的就不认识爱。爱里没有惧怕，完全的爱能除去惧怕。
其他译本
And this commandment have we from him, that he who loveth God love his brother also.
and this <FI>is<Fi> the command we have from Him, that he who is loving God, may also love his brother.
And this is the word which we have from him, that he who has love for God is to have the same love for his brother.
交叉参考
Thou shalt not avenge, nor bear any grudge against the children of thy people, but thou shalt love thy neighbour …
Ye have heard that it hath been said, Thou shalt love thy neighbour, and hate thine enemy.
Jesus said unto him, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, …
And the second is like unto it, Thou shalt love thy neighbour as thyself.
And Jesus answered him, The first of all the commandments is, Hear, O Israel; The Lord our God is one …
And to love him with all the heart, and with all the understanding, and with all the soul, and with …
And he said, He that shewed mercy on him. Then said Jesus unto him, Go, and do thou likewise.
A new commandment I give unto you, That ye love one another; as I have loved you, that ye also …
By this shall all men know that ye are my disciples, if ye have love one to another.
This is my commandment, That ye love one another, as I have loved you.