约翰福音第十四章第15—25节，耶稣告诉门徒们做什么是爱他。耶稣说爱他就是遵守他的道或者说遵守他的命令，不爱他的人就不遵守他的道。并且，耶稣在被捕之前还给了门徒们一条新命令，那就是彼此相爱。
约14:15 你们若爱我、就必遵守我的命令。
If you love me, keep my commandments.
约14:21 有了我的命令又遵守的、这人就是爱我的．爱我的必蒙我父爱他、我也要爱他、并且要向他显现。
One who has my commandments, and keeps them, that person is one who loves me. One who loves me will be loved by my Father, and I will love him, and will reveal myself to him."
约14:22 犹大（不是加略人犹大)问耶稣说、主阿、为甚么要向我们显现、不向世人显现呢。
Judas (not Iscariot) said to him, "Lord, what has happened that you are about to reveal yourself to us, and not to the world?"
约14:23 耶稣回答说、人若爱我、就必遵守我的道．我父也必爱他、并且我们要到他那里去、与他同住。
Jesus answered him, "If a man loves me, he will keep my word. My Father will love him, and we will come to him, and make our home with him.
约14:24 不爱我的人就不遵守我的道．你们所听见的道不是我的、乃是差我来之父的道。
He who doesn't love me doesn't keep my words. The word which you hear isn't mine, but the Father's who sent me.
约14:25 我还与你们同住的时候、已将这些话对你们说了。
I have said these things to you, while still living with you.
