Genesis 37:5 - Joseph Benson’s Commentary on the Old and New Testaments

Joseph dreamed a dream Which it is probable he did not understand at first, and therefore, in great simplicity, told it to his brethren; for, had he understood it, he certainly would not have mentioned it to them, for he could not but know they were likely to make an evil construction and use of it. But God's special providence was seen both in giving him these dreams, and in causing him to reveal them, because hereby it was made manifest, when the things which they signified came to pass, that these events had not happened by chance, but were of God's ordering. It must be observed, that though Joseph was so young, as is here stated, yet his piety and devotion were such, that he was fitted thereby for God's gracious discoveries to him: and as he had a great deal of trouble before him, God, in his great goodness, was pleased betimes to give him this prospect of his advancement, to support and comfort him.