The operative word is ‘I’. They ascribed their reduced blessing to anything but their own lack of service for the Lord.
Are we having a hard time in life? Well, there is always a hard time in some respect; that is what we are called to. But is it unusually hard, all kinds of trials and difficulties, in health and circumstances? Haggai says to the people there, ‘Haven’t you ever wondered about this; haven’t you ever reflected on this? Is my house waste?’ Is your Christian service never taken up? Is your devotion to the Lord not carried through? Are you wondering about hard circumstances? This is a principle of the word of God, that we shall be diminished in some way if we swerve aside from what we can do for the Lord.