אֵיפֹ֣ה הָ֭יִיתָ בְּיָסְדִי־אָ֑רֶץ הַ֝גֵּ֗ד אִם־יָדַ֥עְתָּ בִינָֽה׃
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Rashi
and he understood it in the vision Heb. וּבִינָה and to make him understand it in the vision. Now this word is not a noun, like (Job. 38:4): “if you know understanding (בִּינָה) Instead, the “hey” is superfluous, and it is like (Ps 5:2) “understand (בִּינָה) my thoughts” Therefore, the accent is above on the “beth,” and its meaning is like הָבֵן, understand.
Alshekh
...As there is nothing that profanes and makes a man's heart haughty like great bounty; as it is stated (Deuteronomy 32:15), "So Jeshurun grew fat and kicked." And behold that all of this happens [because] he does not look to God who gave it to him, but rather they forget Him and say that it is 'their strength and their might that produced all of this glory for them.' As ingratitude removes them from the good path and from walking after God, to the point that they are soon lost. Hence our Father in heaven, who wishes [our good] like a father for a child, loves us and teaches us proper ethics: From the time when the scythe begins [to cut] the crop of barley - which is the first of the land's produce - before our hearts become haughty when we see the abundance of produce in the house and in the field, when the threshing floors are filled with grain and the barns with plenty; God comes to open blinded eyes to teach them knowledge. As 'the Lord's is the earth and all of its fullness' - the fruit and the fruit of fruits - since man has no power; hence 'all is vanity.' And so they shall do this in order that their heart not become haughty; such that before any enjoyment from the bounty of the field comes to their mouth, and before they taste the smallest bit of bread or parched grain, all of the Jewish people bring the first of their harvest to the priest while saying to Him, may He be blessed, "Behold we recognize that all of the land and everything in it is Yours; and what is Yours from the beginning of it all has been given to You before we eat from anything, to show that everything is from You and that we are not brazen-faced ingrates." And this is [the meaning] of its statement, "When you come to the land," which you did not need to take with the might of your hands but rather as one who comes to an inheritance": It should not enter your heart to say, "The land was given to us an inheritance from our forefathers and it is ours and our children's forever; and that which we eat its goodness and its produce, it is the effort of our hands that we eat, as we work the land by plowing and reaping and [doing] all the work in the field until the produce arrives. As none of us stops from work - whether by sowing, planting trees, planting shoots, winnowing separating - so we eat the bread of the land by the sweat of our brow..." Hence God, may He be blessed, preceded [us by] saying, "Observe and see that after your coming to the land is not an inheritance that has no break, nor a present given to a heir that had it as an inheritance with no break, but rather 'which I give' - in the present tense - and the giving is never completely final. For whenever you turn away from Me, I shall transfer it to others besides you. And you should not let it enter your minds that it is your harvest that you are harvesting, but rather, 'you shall harvest the harvest' of the land, for it is blessed, and you shall be blessed from its blessing."... "Then you shall bring the omer of the first-fruits of your harvest unto the priest," so that you not be ingrates. And perhaps you will say, "What is this that I should give to the priest, since he is a servant of my Master just like me, such that my Father in Heaven will not take the smallest thing from me and not require it from me, God forbid. So how will it be examined and revealed and seen that I am showing appreciation to God?" Hence, it stated, "And he shall wave the omer before the Lord," such that the priest will wave it up and down and to the directions of the world - to indicate that all of the world and up and down are His, may He be blessed, and that this omer is going to Him and not to the priest...
Sforno
והנני משחיתם את הארץ, so that now I will destroy them together with the earth. I will destroy the climate which could support life on earth by interfering with the sun’s orbit and rearranging it from the beginning of the deluge for the entire future. We find that G’d explained this to Job In Job 38, 4-15. This accounts for the lifespan of man having been drastically reduced after the deluge. The climate of the earth changed, there were greater extremes of heat and cold, the produce of the earth was considerably less capable of supporting a long lifespan. As a by-product of this deterioration in the quality of the vegetable products, man was allowed to eat meat as a compensation.