God's Will

Everything that happened, whether good or bad, is God's will.
And we know that all things work together for good to them that love God, to them who are the called according to his purpose. (Romans 8:28 KJV)

Yet God does have His own will, which may be thwarted by men's will.
The Lord is not slow to fulfill his promise as some count slowness, but is patient toward you, not wishing that any should perish, but that all should reach repentance. (2 Peter 3:9 ESV)

God's will is also found in His moral law.
"And if you faithfully obey the voice of the LORD your God, being careful to do all his commandments that I command you today, the LORD your God will set you high above all the nations of the earth. (Deuteronomy 28:1 ESV)
"But if you will not obey the voice of the LORD your God or be careful to do all his commandments and his statutes that I command you today, then all these curses shall come upon you and overtake you. (Deuteronomy 28:15 ESV)

Men have a choice to obey or disobey God.
The Spirit and the bride say, "Come." And let the one who hears say, "Come." And let the one who is thirsty come; let the one who wishes take the water of life without cost. (Revelation 22:17 NASB)

Yet our salvation is by God's grace.
For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: Not of works, lest any man should boast. (Ephesians 2:8-9 KJV)