.If someone wants to see proof of Hashem just look at nature
Paraphrase Rambam-
הלכות יסודי התורה פרק ראשון
א. יסוד היסודות ועמוד החכמות לידע שיש שם מצוי ראשון והוא ממציא כל נמצא וכל הנמצאים משמים וארץ ומה שביניהם לא נמצאו אלא מאמתת המצאו:
ב. ואם יעלה על הדעת שהוא אינו מצוי אין דבר אחר יכול להמצאות:
Halacha 1
The foundation of all foundations and the pillar of wisdom is to know that there is a Primary Being who brought into being all existence. All the beings of the heavens, the earth, and what is between them came into existence only from the truth of His being.
Halacha 2
If one would imagine that He does not exist, no other being could possibly exist.
(א) בְּרֵאשִׁ֖ית בָּרָ֣א אֱלֹהִ֑ים אֵ֥ת הַשָּׁמַ֖יִם וְאֵ֥ת הָאָֽרֶץ׃
(1) In the beginning God created the heaven and the earth.
? Literal or Metaphoric
(יט) וְהַמַּ֗יִם גָּ֥בְר֛וּ מְאֹ֥ד מְאֹ֖ד עַל־הָאָ֑רֶץ וַיְכֻסּ֗וּ כָּל־הֶֽהָרִים֙ הַגְּבֹהִ֔ים אֲשֶׁר־תַּ֖חַת כָּל־הַשָּׁמָֽיִם׃
(19) And the waters prevailed exceedingly upon the earth; and all the high mountains that were under the whole heaven were covered.
Literal Metaphoric
(כב) וַיָּבֹאוּ בְנֵי יִשְׂרָאֵל בְּתוֹךְ הַיָּם בַּיַּבָּשָׁה וְהַמַּיִם לָהֶם חֹמָה מִימִינָם וּמִשְּׂמֹאלָם.
(22) And the children of Israel went into the midst of the sea upon the dry ground; and the waters were a wall unto them on their right hand, and on their left.
(טו) וְכָל הָעָם רֹאִים אֶת הַקּוֹלֹת וְאֶת הַלַּפִּידִם וְאֵת קוֹל הַשֹּׁפָר וְאֶת הָהָר עָשֵׁן וַיַּרְא הָעָם וַיָּנֻעוּ וַיַּעַמְדוּ מֵרָחֹק.
(15) And all the people saw the thunderings, and the lightnings, and the voice of the horn, and the mountain smoking; and when the people saw it, they trembled, and stood afar off.
Literal Metaphoric
(ב) הַשָּׁמַיִם מְסַפְּרִים כְּבוֹד אֵל וּמַעֲשֵׂה יָדָיו מַגִּיד הָרָקִיעַ.
(ג) יוֹם לְיוֹם יַבִּיעַ אֹמֶר וְלַיְלָה לְּלַיְלָה יְחַוֶּה דָּעַת.
(ד) אֵין אֹמֶר וְאֵין דְּבָרִים בְּלִי נִשְׁמָע קוֹלָם. (ה) בְּכָל הָאָרֶץ יָצָא קַוָּם וּבִקְצֵה תֵבֵל מִלֵּיהֶם לַשֶּׁמֶשׁ שָׂם אֹהֶל בָּהֶם.
(ו) וְהוּא כְּחָתָן יֹצֵא מֵחֻפָּתוֹ יָשִׂישׂ כְּגִבּוֹר לָרוּץ אֹרַח. (ז) מִקְצֵה הַשָּׁמַיִם מוֹצָאוֹ וּתְקוּפָתוֹ עַל קְצוֹתָם וְאֵין נִסְתָּר מֵחַמָּתוֹ.
(2) The heavens declare the glory of God, And the firmament showeth His handiwork;
3) Day unto day uttereth speech, And night unto night revealeth knowledge;
(4) There is no speech, there are no words, Neither is their voice heard. (5) Their line is gone out through all the earth, And their words to the end of the world. In them hath He set a tent for the sun,
(6) Which is as a bridegroom coming out of his chamber, And rejoiceth as a strong man to run his course. (7) His going forth is from the end of the heaven, And his circuit unto the ends of it; And there is nothing hid from the heat thereof.
(ז)........רבי שמעון אומר, המהלך בדרך ושונה ומפסיק ממשנתו ואומר, מה נאה אילן זה ומה נאה ניר זה, מעלה עליו הכתוב כאלו מתחיב בנפשו.
(7) ...... Rabbi Shimon says: He who is walking on his way while repeating his studies, and interrupts his studies and says, 'How lovely is this tree! And how lovely is this newly plowed field!' is deemed by Scripture to be as if he was guilty [of an offense punishable by the forfeiture] of his life.