God is eternal. The plan was established in eternity past, long before God created the heavens and the earth.
Also you are in the hands of a living, loving God. Random collection of disconnected short stories? Far from it. Your life is written by God, who is working towards your supreme goodness.
God has planned creation according to his goodness. He determined the details of salvation “before the foundation of the world” (1 Peter 1:20). Fist of all the death of Jesus was not an afterthought, nor was it Plan B or an emergency operation. Jesus died “when the set time had fully come” (Galatians 4:4 niv), according to God’s “deliberate plan and fore knowledge” (Acts 2:23 niv).
First of all God isn’t making plans as he goes along. Similarly Nor did he wind up the clock and walk away. “The Most High God rules the kingdom of mankind and sets over it whom he will” (Daniel 5:21 esv).
Likewise “For I know what I have planned for you,’ says the LORD. ‘I have plans to prosper you, not to harm you. I have plans to give you a future filled with hope.”
“He was foreknown before the foundation of the world but was manifested in these last times for your sake.”
1 Peter 1:20
“But when the appropriate time had come, God sent out his Son, born of a woman, born under the law,”
“this man, who was handed over by the predetermined plan and foreknowledge of God, you executed by nailing him to a cross at the hands of Gentiles.”
“He was driven from human society, his mind was changed to that of an animal, he lived with the wild donkeys, he was fed grass like oxen, and his body became damp with the dew of the sky, until he came to understand that the most high God rules over human kingdoms, and he appoints over them whomever he wishes.”
“For God is the judge! He brings one down and exalts another.”
“The anger of the LORD will not turn back until he has fully carried out his intended purposes. In days to come you will come to understand this.”