Why does it mention the Giborim?
'Rashi': This is unlike Adoniyahu - "veha'Giborim Asher l'David Lo Hayu Im Adoniyahu" (Melachim I, 1:8).
What is the meaning of "Nasnu Yad"?
'Rashi': They showed trust; they shook his hand to serve him with a full heart.
Malbim: They agreed to be submissive under him. This is like "Egypt Nasanu Yad 1 " (Eichah 5:6).
There, it does not mean that Egypt agreed to be submissive under us! This requires investigation. (PF)
Why does it mention putting their hands under Shlomo?
'Rashi': They did not do so for Adoniyahu.
Malbim: Even though they participated in the feast to make Adoniyahu king [they pledged allegiance to Shlomo].
