In many cases the issue with what is termed double predestination is that those who take issue believe it necessarily implies God leads the non-elect, the reprobate dead in their sins, to sin. When it must be a converse association of God's foreknowledge and will as first pertains to the elect among us who are predestined for his grace and salvific response.
Some do believe that because of what is penned in the works of Isaiah 45.
However, predestination of the elect must necessarily be viewed as having a converse, or parallel, to itself if one first accepts divine election or predestination as a matter of fact in their faith.
God does not have to be seen as one who leads the reprobate, sinner, to commit sin. Rather, one is able to realize if God predestines whom he will save, it is God who has selected that one meant to enter his grace. While God does not actively work to cause the sinner to sin further, what is communicated in the belief of predestined salvation is that God, having predetermined one to be saved, has conversely predetermined whom shall not be. And thus those ones are left to their fallen human nature to suffer the consequence that awaits according to God's plan.
Thus in my lay observation, therein is the basic formulary of the so called Reformed doctrine. That I might add is substantiated by far more learned than myself in different confessions of faith within the Reformed paradox and over hundreds of years.
I am not arrogant enough to state anything that would then have to pertain to every Christian on the planet. That is why I never once said we are elected because of our own worthiness.
Why would that come then to your mind?