Would you believe him:
a message like "hey, believe Jesus, he is my beloved son!"... and let's assume for a moment there are no language issues.
So when God allocates the stars in a way that we read this message, would you believe in God then?
I'm asking all posters from the atheist side...
best regards
Oddly, I answered "yes." I am someone who seeks evidence, and if it occurred as you posit the question, that would certainly constitute evidence.
Even the language question -- there would be no "issue" if God handled it properly. Think of it this way, in my very multicultural (and multilingual) city of Toronto: Five people report what they saw, and there's a cunning linguist available who speaks all of their languages and can translate: Listen to what the observers report:
The English guy says it reads, "hey, believe Jesus, he is my beloved son!"
The Spanish guy says he sees, "oye, créeme en Jesús, él es mi hijo amado!"
The Afrikaans speaker reports, "hey, glo Jesus, hy is my geliefde seun!"
The Japanese lady reads, "ねえ、イエスを信じて、彼は私の最愛の息子です"
And the German insists it says, "Hey, glaube Jesus, er ist mein geliebter Sohn!"
And let me tell you this -- God would really have me if I looked up at the same time and read, "Hey, listen to those folks, that's what I actually said!"
And late edit to add: "But, alas, that never seems to happen."