The word Leviticus means And He Called and the author of the Book is Moses. The Book of Leviticus does not state when it was written but the date of authorship is likely between 1450 and 1400 B.C., which is the approximate time that Moses led the Israelites out of Egypt and the approximate time of Moses death.
Leviticus 1:1 And יהוה called to Moses and spoke to him out of the tabernacle of the congregation saying. C-MATS
Question: How did יהוה call to Moses? He first summoned him lovingly, saying, “Moses, Moses.” In reply, Moses would say, “יהוה, I am at Your service.” As the verse implies, the call came exclusively to Moses. יהוה‘s voice is powerful enough to shatter trees and be heard throughout the world, but it was the Divine will that it be heard only by Moses. יהוה also spoke to Balaam, but not lovingly like He spoke to Moses. Chumash
Leviticus 1:2 Speak to the Children of Israel וְאָמַרְתָּ and you say to them, if any man brings an offering to ליהוה, let him bring אֶת־ his offering from the cattle of his herd or flock. C-MATS
Question: What does this Four Letter Name for יהוה represent? This name represents His Attribute of Mercy and is used in connection with offerings, never the Name Elohim, which represents His Attribute of Judgment. Ancient idolaters believed that animal offerings were needed to lessen the anger of a judgmental, bloodthirsty god. This is totally foreign to our belief. The Torah teaches us that offerings are a means to draw closer to יהוה — the Merciful יהוה. If your offering to יהוה comes from your sincere effort to draw closer to Him, then your offering has the exalted status of an offering to יהוה. But if you merely go through the motions of performing the physical acts of the service, then, unfortunately, it remains merely your offering. Chumash
Question: What does the word “offering” mean in this verse?The word offering in Hebrew (Korban) stems from the word to approach, come near (karov), since through bringing an offering, one comes closer to יהוה. Offerings are usually from animals and in every person there is also an “animalistic soul” from which stems all the evil characteristic traits. The Torah is teaching us that, in addition to bringing an animal as an offering, when a man desires to draw close to יהוה, then he must bring an offering from himself. He must refine the animalistic instincts within him, bringing them “closer to יהוה”. Chumash