Genesis 49:25 - Matthew Poole's English Annotations on the Holy Bible

Here he explains and determines that doubtful expression from these, by adding even by (or rather from as this particle mem properly signifies, and was just now used) the God of thy Father, i.e. who hath chosen and loved they father, and made a league with him, and blessed him with all manner of blessings. Blessings of heaven above, i.e. the sweet and powerful influences of the heavenly bodies, and the dews and rains which fall from heaven, whereby the fruits of the earth are produced in great plenty. See Leviticus 26:4 Deuteronomy 28:12, Deuteronomy 33:14. blessing of the deep, i.e. of the great sea of waters both above the earth, and in the earth, whence come those springs and rivers by which the earth is moistened and made fruitful. See Genesis 1:2, Genesis 7:11, Deuteronomy 8:7. Blessings of the breasts, and of the womb whereby both men and beasts shall be greatly multiplied, and abundantly supplied with all necessaries.