[Petronski]

Calling a fellow Christian to follow Christ, discipleship, is a good thing, not a bad one.

I do not need to be called to follow Christ. I already follow Christ, just not in a way that matches his own personal interpretation of scripture.

"If you wish to follow Christ" makes it sound like some kind of indistinct future possibility. That is insult, not growth.

[Greg F]

But exhort one another daily, while it is called To day; lest any of you be hardened through the deceitfulness of sin
Hebrews 3:13