Everything that is good comes only from God, because He is good. We know this because: God is light and there is no darkness in Him. There is no evil in God whatsoever, therefore we can put complete faith in God. We know that no matter the circumstance God can only be and do good. God is also pure and there is no corruption in His character. God is not affected by the corruption on earth and He remains morally pure and holy above His creation. Psalm 5:4, Job 34:10 God is immutable. God doesn't change in His essence, attributes, character, virtues, and ways. If God were like us and he was constantly changing His mind then we would have every reason to fear. For He would be no different than the human gods we created which is basically a human with a lot of power. We would be afraid of being consumed at any moment. However because God is unchanging than we have complete assurance in His word and goodness. Malachi 3:6 God chose to save his people through the gospel. God by His own will chose to deliver us from darkness to light, from death to life. (2 Corinthians 4:6) If He chose to start a work in us won't He be faithful to complete it? Of course He will! We as believers should never doubt the goodness and character of God just for the fact that we recognize Jesus as Lord. Philippians 1:6
Main point summary
There should be on doubt among believers in regards to the character of God. For in the way He has chosen to treat us and graciously pours out His gifts on us displays that there is no cause to disbelieve His goodness.
Do not be deceived, my beloved brothers.
So my beloved brethren in the faith, don't let anybody trick you in regards to the character of God.
z Every good gift and every perfect gift is from above,
Because , all the wonderful and perfect gifts that we enjoy, all of them, originate in the heavenly places,
coming down from a the Father of lights
In other words , these wonderful gifts come down from the One who dwells in unapproachable light
b with whom there is no variation
For there is neither any change happening with God
or shadow due to change. 1
nor is there the slightest darkness within His character.
c Of his own will he d brought us forth
For He caused us to be born again by His own volition
by the word of truth,
through the good news of the gospel of Jesus Christ,
e that we should be a kind of f firstfruits of his creatures.
in order that we would be recognized as the firstfruits of His creation.