Matthew Poole and continuators on 2 Kings 23:3

3 ¶ And the king stood by the pillar , and made a covenant before the LORD, to walk after the LORD, and to keep his commandments, and his testimonies, and his statutes, with all their heart, and all their soul, to perform the words of this covenant, that were written in this book: and all the people stood to the covenant .

Of which see on chap. 11. 14. and 2 Chron. 34. 31.

To wit, as to the taking of it: they declared their consent to it, and their concurrence with the King in that act, which possibly they did by standing upright, as the King himself stood when he took it.