@SoulWeaver
I think also if we look at the Canons of Dort we can see why
@throughfaith is making this assertion.
Assurance of their eternal and unchangeable election to salvation is given to the chosen in due time, though by various stages and in differing measure. Such assurance comes not by inquisitive searching into the hidden and deep things of God, but by noticing within themselves, with spiritual joy and holy delight, the unmistakable fruits of election pointed out in God’s Word—such as a true faith in Christ, a childlike fear of God, a godly sorrow for their sins, a hunger and thirst for righteousness, and so on.
https://www.crcna.org/welcome/beliefs/confessions/canons-dort
This is Reformed Theology
........the difficulty is they will turn around and also state it is all God's work as well.
In essence assurance is placed on a very unbalanced ground.
"Looking to oneself" for evidence/assurance is very prevalent in many teachers who lean towards Calvinism or who are Five Point Calvinists.