I am a messenger from Allah to you to tell you that Allah loves you as you love him for His sake

The Prophet (may Allah's peace and blessings be upon him) recounts that a man from the past nations set out to visit a brother in faith in another town. Allah, the Exalted, sent an angel to watch over him and protect him on the way. The angel asked him where he was going. The man said that he was going to visit a brother in religion in that town. So the angel asked if that was his slave, son, dependent, or someone whom he benefits from or whom he owes a favor.

The man replied in the negative, saying that he only loved that person for the sake of Allah and wished to gain the pleasure of Allah by visiting him. Thereupon, the angel told him that he was a messenger from Allah to tell him that Allah loves him just as he loves his brother for the sake of Allah.