When Jeroboam son of Nebat heard about this, he was still in Egypt where he had fled from King Solomon and had been living ever since.
Solomon had 1000 wives and concubines, yet we read but of one son he had to bear up his name, and he a fool. It is said (Hos 4:10), They shall commit whoredom, and shall not increase. Sin is a bad way of building up a family.
Commenting on 1 Kings 12:1-15
And it came to pass, when Jeroboam the son of Nebat, who was yet in Egypt, heard of it,.... Of the death of Solomon, and of the meeting of the Israelites at Shechem: (for he was fled from the presence of King Solomon; see Kg1 11:40.
After the death of Solomon the Israelitish kingdom of God was rent asunder, through the renunciation of the Davidic sovereignty by the ten tribes, into the two kingdoms of Israel (the ten tribes) and Judah; and through this division not only was the external political power of the Israelitish state weakened, but the internal spiritual power of the covenant nation was deeply shaken.
Commenting on 1 Kings 12:1-24