Why did Imam Khomeini put emphasis on spiritual construction of nation?

Beware of the aftermath of your deeds, Imam Khomeini advised

Imam Khomeini advised through his theological works advised believers fear God! Beware of the aftermath of your deeds! Wake up from the sleep of negligence!

Imam Khomeini advised believer to completely concentrate attention on God Almighty

Imam Khomeini has said it requires extra hard practice, going to some lengths, spiritual exercises, perseverance, and discipline, until one is able to fix one’s attention completely on nothing but God and cut himself off from all else.

God will not leave you unpaid, Imam Khomeini advised faithful people

Imam Khomeini through his theological works advised the faithful people to take some trouble on the way to God.

Imam stressed the need to be certain in faith and trust in God Almighty

According to Imam Khomeini, if man is certain and has faith that all the outward and inward worlds are in the presence of the Lord, and that God, the Exalted, is present everywhere and sees everything, in the presence of God and God’s blessings there would be no possibility for committing sins.

Imam Khomeini stressed need for purifying intentions

Imam Khomeini recommended the faithful people of purifying their intentions, rectifying their deeds and expelling love of self .

Spiritual construction has priority over all others, Imam Khomeini explained

Imam Khomeini stressed that the country and the nation are in need of construction, and spiritual construction has priority over all others. The spiritual and physical struggle for the cause of God should begin from the ‘self’; to fight against the internal Satan. This jihad will be the basis of other jihads and struggles.

It is impossible to learn the Book and Wisdom without self-purification, Imam Khomeini explained

Imam Khomeini explained for the believers and faithful people that it has been impossible to learn the Book and Wisdom without self-purification.