[“Amandus Polanus vons Polansdorf studied at Tubingen, Basel, and Geneva. He was appointed professor of Old Testament at Basel in 1596 and served as dean of the theological faculty from 1598-1609. His dogmatic works are Partitiones theologicae, pars I (1590), pars II (1596); Syntagma theologiae christianae (1609).” Richard Muller, Post-Reformation Reformed Dogmatics, 1:44 (first edition).]
Polanus:
And this much touching the wisdom of God. Now follows concerning his will.
The will of God is an essential property of God, by which he wills all things that he wills, and that from all eternity, of himself also, and that by one constant act.
And this will is most free, so that God does not anything, or command or suffer it to be done, but freely willing it: whereupon also it is called God’s most free will.
And because it does not depend of any other former beginning out of itself, it alone properly deserves to be called free will.
And indeed and truth it is but one will, because it is the very essence of God. Howbeit in respect of us, it is sundry, ways distinguished.
1. The will of God is either his will of effecting, or of permitting only.
His will of effecting, is that according to which God effects all good things, whether it be by himself or by others.
The will of permitting is that, according to which God suffers sin to be committed: for God certainly does willingly permit sin, and not unwillingly, that is to say, against his will and enforced (for who can constrain God?). And this he does for a double end: first that he might manifest the infirmity and weakness of the creature, because it cannot stand, unless it it be every moment upheld in uprightness by God. Secondly, that by this occasion, God might declare, either his mercy and power, in delivering the elect from sin, or else his justice and power in punishing the reprobate for their sin.
2. Again the will of God is either absolute or conditional.