Samuel’s words in verse 37 recall Nephi’s lament for his people:
Helaman 7:15-16
15 And because of my mourning and lamentation ye have gathered yourselves together, and do marvel; yea, and ye have great need to marvel; yea, ye ought to marvel because ye are given away that the devil has got so great hold upon your hearts.
16 Yea, how could you have given way to the enticing of him who is seeking to hurl away your souls down to everlasting misery and endless wo?
Nephi laments that his people are being enticed by Satan, and Samuel has the people surrounded by the hosts of Satan. In both cases, the people have entered their situation willingly. For Samuel, there will be great pain when they discover what they have done to themselves.