Musar su Salmi 5:8

In the morning, he [should] connect himself to the traits of the three fathers that are included in Splendor: When the dawn rises, he also begins to come to the synagogue and bind himself to the three fathers. At the opening of the synagogue, he says, "But I, through Your abundant kindness, enter, etc." (Psalms 5:8). And he includes himself in the secret of the Splendor of Man that includes Kindness, Severity and Splendor, and he enters the assembly of Kingship.

For the angels are closer to Him due to lacking physical bodies. Thus it is easier for them to conceive of His exalted greatness. Therefore His fear weighs upon them more strongly than upon human beings. However, king David would praise G-d saying: "I shall prostrate myself to the Temple of Your holiness in fear of You" (Tehilim 5:8), and scripture says: "and he was afraid before My Name" (Malachi 2:5), and "my G-d, I am ashamed and blush to lift up my face to You" (Ezra 9:6).

Likewise our sages, of blessed memory, said regarding the Levites: "because they knew that whoever carries the Ark merits great reward, they abandoned the Shulchan, Menorah and Altars, and all ran to the Ark to gain reward. Then, this person argued saying 'I will carry it from here' and that person argued saying 'I will carry it from here' until they came to lightheadedness and the Divine presence would hit them..." (Midrash Raba 5:1).