LET'S TAKE A LOOK AT GOD'S CHARACTER:
The author is saying "every good and perfect gift is from above".
James goes on to say that "God does not change". This is to say God is always "good and perfect".
God wants only "welfare" and "not calamity" for us.
Hebrews 13:8; Jesus Christ is the same yesterday and today and forever.
Malachi 3:6; “For I the Lord do not change; therefore you, O children of Jacob, are not consumed."
Numbers 23:19; God is not man, that he should lie, or a son of man, that he should change his mind. Has he said, and will he not do it? Or has he spoken, and will he not fulfill it?
Isaiah 40:8; The grass withers, the flower fades, but the word of our God will stand forever.
THEN WHAT IS GOING ON?
Could it be, despite the evils of Satan, we can know "God is faithful" and we can strengthen our faith and know that it cannot be God who is bringing death and destruction?
Maybe the "escape" would be the strengthening of our faith?
That in turn would bring us closer to God wouldn't it?
Which in turn would disperse the evil in front of us?
Could it be, that God is using Satan (who being the perfect example of evil in all its facets) who brings us death, destruction, and loss? If God could encourage us (through the Bible) to rise above Satan's evil, murder, loss, thieving and death, then our struggle would strengthen our faith wouldn't it? Then by that act we would get closer to God? See below for 2 Peter 1:3-4:
2 Peter 1:3-4; His divine power has given us everything we need for a godly life through our knowledge of Him who called us by his own glory and goodness. 4 Through these He has given us His very great and precious promises, so that through them you may participate in the divine nature, having escaped the corruption in the world caused by evil desires.
This says "having escaped the corruption".
God wants to share His divine nature: "Through these He has given us his very great and precious promises, so that through them we may participate in His divine nature."
(See 'UNDERSTANDING GOD') to discover more of what God is like.
(See 'THE BEGINNING OF MANKIND') to see God's original intention when He created His first 2 spirits and the environment He created.
LET'S TAKE A LOOK AT SATAN'S CHARACTER:
Then is it Satan who is the author of death and lies? Then it could not be God?
Then is it man who brings "wars and fights"? Then it could not be God?
ARE WE STILL OPERATING UNDER THE LAW OF MOSES?
This verse is telling us that we are "not under the Law" (since the death of Jesus), then we are released from sin which mastered us because of the Law of Moses. That we are under the Time of "Grace"
The Law of Moses was based upon the 'works' we did and we would get rewarded because of these.
Grace (since the death of Jesus) is not this way.
God has brought us "salvation" through this Time of Grace.
We have been "saved" because of this Time of Grace.
(See 'GRACE AND THE LAW').
Does God's character allow Him to give us calamity, destruction, death, lies, loss and murder?