This dvar Torah is part of a shmuz I heard from Rav Moshe Chait zt”l, Rosh Yeshiva of Yeshiva Chofetz Chaim Yerushalayim at around the beginning of the century.
Equivalent to the seventh day of Passover, by the splitting of the Red Sea, Klal Yisrael reached what is essentially the highest point of Holiness. They sang Shira [songs] to Hashem while crossing on dry land. In the Shira it says, “ זֶ֤ה אֵלִי֙ וְאַנְוֵ֔הוּ” which literally means, “This is my G-D and I will build Him a Sanctuary,” or “I will make myself into a G-dly sanctuary” (Shemos 15:2). This is the loftiest expression because they pointed and said “This is my G-D”. They had such a high level of emuna, belief in Hashem, that they were able to point at something. People recognize things with their senses, and the most realistic sense is sight, as they say, “seeing is believing.” The level they were on was above that because of their emuna [belief in Hashem].
What does אַנְוֵ֔הוּ refer to? The Gemara in Shabbos 133b goes through a list of mitzvos and says it comes from the word, נאה, to beautify the mitzvos. The gemara then quotes Abba Shaul who says they felt that they had to be comparable to Hashem, meaning they wanted to act like Hashem, just like a child wants to act like his parents, אני והוא.
The first view holds there is a level of a person who is putting a part of himself into doing a mitzvah. Abba Shaul is saying you should want to be just like Hashem which is a higher level.
The way Avraham found Hashem was not from a physical understanding of the world, but he saw the kindness that Hashem did in creating the world. Kindness is spiritual. This is how he came to recognize Hashem!
The truest love is trying to emulate someone else!