Exposing Hypocrites 

Allah said,

وَلَوْ أَرَادُواْ الْخُرُوجَ

And if they had intended to march out,

with you to participate in Jihad, 
 
لاأَعَدُّواْ لَهُ عُدَّةً

certainly, they would have made some preparation for it,

they would have prepared for such task,
 
وَلَـكِن كَرِهَ اللّهُ انبِعَاثَهُمْ

but Allah was averse to their being sent forth,

Allah hated that they should go with you,
 
فَثَبَّطَهُمْ

so He made them lag behind, and stay away (from Jihad),
 
وَقِيلَ اقْعُدُواْ مَعَ الْقَاعِدِينَ
 
 

and it was said (to them):"Sit you among those who sit (at home)."

as a part of what was decreed for them (not that He legislated that they stay behind).

Allah then explained why He disliked that they march with the believers, saying