Everything happens by Grace of God

Thirumanthiram -- Paayiram -- History of Thirumoolar -- Song 92:

⭐️⭐️⭐️⭐️⭐️

Nandhi arulaalae moolanai naadipin

Nandhi arulaalae sadhaasivan aayinaen

Nandhi arulaal meignaanathul nanninaen

Nandhi arulaalae naanirun dhaenae.

⭐️⭐️⭐️⭐️⭐️

Explanation:

⚡️⚡️⚡️⚡️⚡️

Thirumoolar says that by God's grace, he sought the body of moolan. By God's grace, he became Sadasiva. By God's grace, he attained the divine truth. By God's grace, he remained as one with Lord Shiva. 

By this, Thirumoolar explains that everything happens only by God's grace.