How do we know Calvinism is true regarding God's love?

Calvinism is rooted in Scripture which articulates a particular understanding of God's love. It teaches that God's love is directed toward the elect, supported by texts like Romans 9:11-13 and Ephesians 1:4-5. Unlike a universal love that would imply God loves all indiscriminately, Calvinism upholds that God's love is effective and brings about salvation for His chosen ones. This is further reinforced in the teachings of John Calvin and the Canons of the Synod of Dort, which define God’s love as unmerited and sovereignly bestowed on the elect only, contrasting it with His wrath towards the reprobate.